Solve for x
x=12
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1.5x+x=0.75x+21
Multiply both sides of the equation by 3.
2.5x=0.75x+21
Combine 1.5x and x to get 2.5x.
2.5x-0.75x=21
Subtract 0.75x from both sides.
1.75x=21
Combine 2.5x and -0.75x to get 1.75x.
x=\frac{21}{1.75}
Divide both sides by 1.75.
x=\frac{2100}{175}
Expand \frac{21}{1.75} by multiplying both numerator and the denominator by 100.
x=12
Divide 2100 by 175 to get 12.
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