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25 March, 17:31

Sam can not read part of his homework problem.

-7y+5 (3+___y)

Sam knows the expression simplifies to 3y+15. What number belongs on the blank line in the homework problem?

A.) 4

B.) 10

C.) 2

D.) - 4

+2
Answers (1)
  1. 25 March, 20:10
    0
    The answer is B. 10

    -7y+5 (3+? y) so

    -7y+15+? y so

    -7y+? y must equal 3 so

    Y must be 10 because 10-7=3
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