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4\times 3\left(x-1\right)-5\left(x+1\right)=20x+40-10\times 3\left(x-3\right)
Multiply both sides of the equation by 20, the least common multiple of 5,4,2.
12\left(x-1\right)-5\left(x+1\right)=20x+40-10\times 3\left(x-3\right)
Multiply 4 and 3 to get 12.
12x-12-5\left(x+1\right)=20x+40-10\times 3\left(x-3\right)
Use the distributive property to multiply 12 by x-1.
12x-12-5x-5=20x+40-10\times 3\left(x-3\right)
Use the distributive property to multiply -5 by x+1.
7x-12-5=20x+40-10\times 3\left(x-3\right)
Combine 12x and -5x to get 7x.
7x-17=20x+40-10\times 3\left(x-3\right)
Subtract 5 from -12 to get -17.
7x-17=20x+40-30\left(x-3\right)
Multiply -10 and 3 to get -30.
7x-17=20x+40-30x+90
Use the distributive property to multiply -30 by x-3.
7x-17=-10x+40+90
Combine 20x and -30x to get -10x.
7x-17=-10x+130
Add 40 and 90 to get 130.
7x-17+10x=130
Add 10x to both sides.
17x-17=130
Combine 7x and 10x to get 17x.
17x=130+17
Add 17 to both sides.
17x=147
Add 130 and 17 to get 147.
x=\frac{147}{17}
Divide both sides by 17.