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jeka57 [31]
3 years ago
8

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

Mathematics
2 answers:
vesna_86 [32]3 years ago
6 0
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
shepuryov [24]3 years ago
4 0
Plug 4 into the expression for the value z and complete the expression,
7(4)+(-4)=28-4
24.
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