Solve for x
x=\frac{3}{4}=0.75
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7\left(7-5x\right)=21x+7
Multiply both sides of the equation by 14, the least common multiple of 2,14.
49-35x=21x+7
Use the distributive property to multiply 7 by 7-5x.
49-35x-21x=7
Subtract 21x from both sides.
49-56x=7
Combine -35x and -21x to get -56x.
-56x=7-49
Subtract 49 from both sides.
-56x=-42
Subtract 49 from 7 to get -42.
x=\frac{-42}{-56}
Divide both sides by -56.
x=\frac{3}{4}
Reduce the fraction \frac{-42}{-56} to lowest terms by extracting and canceling out -14.
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