Solve for x
x=148
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4x+30-1.5x=400
Use the distributive property to multiply 1.5 by 20-x.
2.5x+30=400
Combine 4x and -1.5x to get 2.5x.
2.5x=400-30
Subtract 30 from both sides.
2.5x=370
Subtract 30 from 400 to get 370.
x=\frac{370}{2.5}
Divide both sides by 2.5.
x=\frac{3700}{25}
Expand \frac{370}{2.5} by multiplying both numerator and the denominator by 10.
x=148
Divide 3700 by 25 to get 148.
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