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12=10-2 (3z-4) please hellp please
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12=10-2 (3z-4) please hellp please

User Sotti
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2 Answers

2 votes
12=10-2(3z-4)
12=10-6z+8
12=-6z+18
12-18=-6z
-6=-6z
z=1
User Alankrit
by
7.9k points
5 votes
12 = 10 - 2(3z - 4) |use distributive property: a(b - c) = ab - ac

12 = 10 - 6z + 8

12 = 18 - 6z |subtract 18 from both sides

-6 = -6z |divide both sides by (-6)

z = 1
User Paul Stelian
by
8.2k points
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