Solve for x
x = \frac{15}{8} = 1\frac{7}{8} = 1.875
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20x-5\times 3=12x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 20x, the least common multiple of 4x,5.
20x-15=12x
Multiply -5 and 3 to get -15.
20x-15-12x=0
Subtract 12x from both sides.
8x-15=0
Combine 20x and -12x to get 8x.
8x=15
Add 15 to both sides. Anything plus zero gives itself.
x=\frac{15}{8}
Divide both sides by 8.
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