Evaluate: 7 z +(-z ), when z = 4.

asked Sep 21, 2018 142k views

4 votes

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4 votes

Plug 4 into the expression for the value z and complete the expression,
7(4)+(-4)=28-4
24.

Tomafro answered Sep 22, 2018

8.8k points

7 votes

First insert 4 into the place of every z. Making the problem 7(4) -4. Next multiply 7 and 4 to get 28, then simply subtract 4. Your answer will be 24

Dalius answered Sep 25, 2018

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