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12-6(w-3)=3(-5-3w)+21​

1 Answer

4 votes

Answer:

w = -8

Explanation:

12-6(w-3)=3(-5-3w)+21​ (expand parentheses)

12-6(w)-(-6)(3)= (3)(-5) - (3)(3w) +21​

12 - 6w + 18 = -15 -9w + 21

-6w + 30 = 6 - 9w (add 9w to both sides)

-6w + 30 + 9w = 6

3w + 30 = 6 (subtract 20 from both sides)

3w = 6 - 30

3w = -24 (divide both sides by 3)

w = -24 ÷ 3

w = -8

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