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20x-12=7x-4+2\left(x-1\right)
Use the distributive property to multiply 4 by 5x-3.
20x-12=7x-4+2x-2
Use the distributive property to multiply 2 by x-1.
20x-12=9x-4-2
Combine 7x and 2x to get 9x.
20x-12=9x-6
Subtract 2 from -4 to get -6.
20x-12-9x=-6
Subtract 9x from both sides.
11x-12=-6
Combine 20x and -9x to get 11x.
11x=-6+12
Add 12 to both sides.
11x=6
Add -6 and 12 to get 6.
x=\frac{6}{11}
Divide both sides by 11.