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80x+60-10x=12-5\left(3+2x\right)-20x
Multiply both sides of the equation by 20, the least common multiple of 2,5,4.
70x+60=12-5\left(3+2x\right)-20x
Combine 80x and -10x to get 70x.
70x+60=12-15-10x-20x
Use the distributive property to multiply -5 by 3+2x.
70x+60=-3-10x-20x
Subtract 15 from 12 to get -3.
70x+60=-3-30x
Combine -10x and -20x to get -30x.
70x+60+30x=-3
Add 30x to both sides.
100x+60=-3
Combine 70x and 30x to get 100x.
100x=-3-60
Subtract 60 from both sides.
100x=-63
Subtract 60 from -3 to get -63.
x=\frac{-63}{100}
Divide both sides by 100.
x=-\frac{63}{100}
Fraction \frac{-63}{100} can be rewritten as -\frac{63}{100} by extracting the negative sign.