Solve for x
x=-9
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28x-7-21x=-70
Subtract 21x from both sides.
7x-7=-70
Combine 28x and -21x to get 7x.
7x=-70+7
Add 7 to both sides.
7x=-63
Add -70 and 7 to get -63.
x=\frac{-63}{7}
Divide both sides by 7.
x=-9
Divide -63 by 7 to get -9.
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