Question

Evaluate if X = 5 and Y = 10
5 + 7X - 3Y

Answer 1

10

Explanation:

Plug in 5 for x, and 10 for y in the expression:

5 + 7(5) - 3(10)

Remember to follow PEMDAS. PEMDAS is the order of operation, and stands for:

Parenthesis

Exponent (& Roots)

Multiplication

Division

Addition

Subtraction

First, Multiply:

7 * 5 = 35

-3 * 10 = -30

5 + 35 - 30

Combine like terms:

(5 + 35) - 30

40 - 30 = 10

10 is your answer.

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