3
QuizMultiple Choice

Simplifying Algebraic Expressions — Quiz

Question 3 • Mathematics 8

Ronin simplified an expression, and his solution is shown. His teacher told him to verify that they are equivalent by using x is equal to 5 What is the resulting value of both expressions? Ronin's Work x plus 13 plus 2 x minus 4 is equal to 3 x plus 9

Answer
A
24
B
15
C
32
D
36

Explanation

Substitute x = 5 into the original expression: 5 + 13 + 2(5) − 4 = 24. Substituting into Ronin’s simplified expression gives 3(5) + 9 = 24 as well. Both expressions have a value of 24, so the correct choice is A, 24.

AI-written and checked against the verified answer.

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