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7\left(1-2x\right)=21x-3\left(8x-6\right)
Multiply both sides of the equation by 21, the least common multiple of 3,7.
7-14x=21x-3\left(8x-6\right)
Use the distributive property to multiply 7 by 1-2x.
7-14x=21x-24x+18
Use the distributive property to multiply -3 by 8x-6.
7-14x=-3x+18
Combine 21x and -24x to get -3x.
7-14x+3x=18
Add 3x to both sides.
7-11x=18
Combine -14x and 3x to get -11x.
-11x=18-7
Subtract 7 from both sides.
-11x=11
Subtract 7 from 18 to get 11.
x=\frac{11}{-11}
Divide both sides by -11.
x=-1
Divide 11 by -11 to get -1.