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-2\left(-4\right)=2\left(7x-2\right)\times 3-5\times \frac{1}{2}\times 2\left(7x-2\right)
Variable x cannot be equal to \frac{2}{7} since division by zero is not defined. Multiply both sides of the equation by 2\left(7x-2\right), the least common multiple of 2-7x,2.
8=2\left(7x-2\right)\times 3-5\times \frac{1}{2}\times 2\left(7x-2\right)
Multiply -2 and -4 to get 8.
8=6\left(7x-2\right)-5\times \frac{1}{2}\times 2\left(7x-2\right)
Multiply 2 and 3 to get 6.
8=42x-12-5\times \frac{1}{2}\times 2\left(7x-2\right)
Use the distributive property to multiply 6 by 7x-2.
8=42x-12-\frac{5}{2}\times 2\left(7x-2\right)
Multiply 5 and \frac{1}{2} to get \frac{5}{2}.
8=42x-12-5\left(7x-2\right)
Multiply \frac{5}{2} and 2 to get 5.
8=42x-12-35x+10
Use the distributive property to multiply -5 by 7x-2.
8=7x-12+10
Combine 42x and -35x to get 7x.
8=7x-2
Add -12 and 10 to get -2.
7x-2=8
Swap sides so that all variable terms are on the left hand side.
7x=8+2
Add 2 to both sides.
7x=10
Add 8 and 2 to get 10.
x=\frac{10}{7}
Divide both sides by 7.