Solve for x
x=14
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3x+21-7x=-35
Subtract 7x from both sides.
-4x+21=-35
Combine 3x and -7x to get -4x.
-4x=-35-21
Subtract 21 from both sides.
-4x=-56
Subtract 21 from -35 to get -56.
x=\frac{-56}{-4}
Divide both sides by -4.
x=14
Divide -56 by -4 to get 14.
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