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5\left(x-3\right)-4\left(2x-1\right)=100
Multiply both sides of the equation by 20, the least common multiple of 4,5.
5x-15-4\left(2x-1\right)=100
Use the distributive property to multiply 5 by x-3.
5x-15-8x+4=100
Use the distributive property to multiply -4 by 2x-1.
-3x-15+4=100
Combine 5x and -8x to get -3x.
-3x-11=100
Add -15 and 4 to get -11.
-3x=100+11
Add 11 to both sides.
-3x=111
Add 100 and 11 to get 111.
x=\frac{111}{-3}
Divide both sides by -3.
x=-37
Divide 111 by -3 to get -37.