. help please and fast 15 points

asked Sep 1, 2021 9.2k views

1 vote

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3 votes

3) 4x + 12x = 320
16x = 320
divide 16 by both sides
x = 20

4) 3.5z - 2.7z = -6
0.8z = -6
divide 0.8 both sides
z = -7.5

Fedearne answered Sep 8, 2021

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