12
practice examMultiple Choice

Practice Exam

Question 12 • Grade 7 Mathematics

Which expressions are equivalent to 5 x minus 15 ? Choose three correct answers.

Answer
A
negative 20 minus 3 x plus 5 plus 8 x
B
5 times open paren x minus 3 close paren
C
4 x plus 3 y minus 15 minus 3 y plus x
D
negative 7 y minus 6 x minus 8 y plus x
E
5 times open paren x plus 15 close paren

Explanation

Combine like terms or distribute in each expression. A simplifies to −20 + 5 + (−3x + 8x) = 5x − 15; B becomes 5x − 15; and C becomes (4x + x) + (3y − 3y) − 15 = 5x − 15. D and E do not simplify to the target expression.

AI-written and checked against the verified answer.

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