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12\left(x-4\right)=20\left(x-2\right)-15\left(x-3\right)
Multiply both sides of the equation by 60, the least common multiple of 5,3,4.
12x-48=20\left(x-2\right)-15\left(x-3\right)
Use the distributive property to multiply 12 by x-4.
12x-48=20x-40-15\left(x-3\right)
Use the distributive property to multiply 20 by x-2.
12x-48=20x-40-15x+45
Use the distributive property to multiply -15 by x-3.
12x-48=5x-40+45
Combine 20x and -15x to get 5x.
12x-48=5x+5
Add -40 and 45 to get 5.
12x-48-5x=5
Subtract 5x from both sides.
7x-48=5
Combine 12x and -5x to get 7x.
7x=5+48
Add 48 to both sides.
7x=53
Add 5 and 48 to get 53.
x=\frac{53}{7}
Divide both sides by 7.