Question

-7(5x+3)
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Answer 1

-35X-21. What you do is you distribute negative seven. Negative seven times five x is negative thirty five x. Negative seven times positive three is negative twenty one.

Answer 2

Use the distributive property.

-7 multiplied by 5x = -35x
-7 multiplied by 3 = -21
-35x -21

They can not be added or subtracted, because they are not like terms.