Solve for x
x=20
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4\times 15=3x
Multiply both sides of the equation by 240, the least common multiple of 60,80.
60=3x
Multiply 4 and 15 to get 60.
3x=60
Swap sides so that all variable terms are on the left hand side.
x=\frac{60}{3}
Divide both sides by 3.
x=20
Divide 60 by 3 to get 20.
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