Solve for x
x=-12
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7-7x-21+5x=3+7
Use the distributive property to multiply -7 by x+3.
-14-7x+5x=3+7
Subtract 21 from 7 to get -14.
-14-2x=3+7
Combine -7x and 5x to get -2x.
-14-2x=10
Add 3 and 7 to get 10.
-2x=10+14
Add 14 to both sides.
-2x=24
Add 10 and 14 to get 24.
x=\frac{24}{-2}
Divide both sides by -2.
x=-12
Divide 24 by -2 to get -12.
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