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To Calculate the Percentage of a number, firstly, we can apply the unitary method. Secondly, we take the fraction in consideration and change its denominator to \(100\).
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To combine like terms in variable expressions, we must use 2 techniques:

• Firstly, we must add or subtract like terms like those with the same variable (like \(3x, \ -7x\)) or those with the same powers (like \(2x^2, \ -3x^2\)). Also, we must use the same sign for coefficients after combining the like terms.
• Next, we must apply distributive law if possible. The distributive property states that multiplication distributes over addition, i.e., \(x(y \ + \ z) \ = \ (xy \ + \ xz)\).

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To evaluate two variables, we must follow the given steps:

• If possible, first simplify the variable expression
• Next, just substitute the value of the variables in the equation.

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To evaluate a single variable, we must follow the given steps:

• If possible, first simplify the variable expression.
• Next, just substitute the value of the variable in the equation.

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The distributive property is an extremely critical topic in the field of mathematics. As the word itself suggests, this property is extremely crucial while performing distributive multiplication over addition or subtraction. For example, let us consider the problem: \(5 \times (4 \ + \ 3 \ + \ 7)\)
Now to solve this in a more easy way, we will use the distributive property over addition. We will write this as: \(5 \times 4 \ + \ 5 \times 3 \ + \ 5 \times 7\)
As you can see, we distributed \(5\) over the three terms \(4\), \(3\), and \(7\).
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In mathematics, algebraic statements or expressions are defined as a combination of a certain number of terms (that might be variables or constants) which are separated by certain mathematical operations. Now, to be precise, these terms can be pure variables (like \(x^2, \ x^3\)), pure constants (like \(2, \ 9, \ 45\), etc.) or even mixed terms with coefficients (like \(2x^2, \ 9x^3\), etc.). 
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Similar figures are 2 figures with the exact shape. Objects having the exact same size and shape are called congruent objects. For instance, a person’s two hands or the 2 front wheels on a vehicle are a couple of examples of congruent objects. However, objects can be of a similar shape yet have varied sizes. Use the \(∼\) symbol to represent similarity.
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In mathematics, the ratio is defined as the comparison between two numbers. This is generally done to find out how big or small a number or a quantity is with respect to another. So, what method do we use to find these ratios? Well, we use the division method. In a ratio, two numbers are divided.
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Ratios are a mathematical method used to compare different values. The word “ratio" is utilized in regard to a study or analysis of several data sets, like showing a performance rating of a product or explaining demographics. Fractions and proportions are interwoven with ratios. They both show a contrast of several values
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To add or subtract two integers, follow these steps:

• In the first case, if two integers have the same sign (either both are positive or both are negative), add up those integers and put the common sign.
• In the second case, if two integers have an opposite sign (one is positive and the other one negative), then subtract them and put the sign of the bigger number.

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