Solve for x
x=-15
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3x+21-6=2x
Use the distributive property to multiply x+7 by 3.
3x+15=2x
Subtract 6 from 21 to get 15.
3x+15-2x=0
Subtract 2x from both sides.
x+15=0
Combine 3x and -2x to get x.
x=-15
Subtract 15 from both sides. Anything subtracted from zero gives its negation.
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