Solve for x
x=3
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14x-21=7x
Combine 11x and 3x to get 14x.
14x-21-7x=0
Subtract 7x from both sides.
7x-21=0
Combine 14x and -7x to get 7x.
7x=21
Add 21 to both sides. Anything plus zero gives itself.
x=\frac{21}{7}
Divide both sides by 7.
x=3
Divide 21 by 7 to get 3.
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