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4x\times \frac{1}{2}+4x\left(-\frac{3}{4}\right)+4x\times \frac{1}{2}=4\times 2
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 4x, the least common multiple of 2,4,x.
\frac{4}{2}x+4x\left(-\frac{3}{4}\right)+4x\times \frac{1}{2}=4\times 2
Multiply 4 and \frac{1}{2} to get \frac{4}{2}.
2x+4x\left(-\frac{3}{4}\right)+4x\times \frac{1}{2}=4\times 2
Divide 4 by 2 to get 2.
2x-3x+4x\times \frac{1}{2}=4\times 2
Cancel out 4 and 4.
-x+4x\times \frac{1}{2}=4\times 2
Combine 2x and -3x to get -x.
-x+\frac{4}{2}x=4\times 2
Multiply 4 and \frac{1}{2} to get \frac{4}{2}.
-x+2x=4\times 2
Divide 4 by 2 to get 2.
x=4\times 2
Combine -x and 2x to get x.
x=8
Multiply 4 and 2 to get 8.