Solve for x
x=150
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50=15+0.5x-40
Use the distributive property to multiply 0.5 by x-80.
50=-25+0.5x
Subtract 40 from 15 to get -25.
-25+0.5x=50
Swap sides so that all variable terms are on the left hand side.
0.5x=50+25
Add 25 to both sides.
0.5x=75
Add 50 and 25 to get 75.
x=\frac{75}{0.5}
Divide both sides by 0.5.
x=\frac{750}{5}
Expand \frac{75}{0.5} by multiplying both numerator and the denominator by 10.
x=150
Divide 750 by 5 to get 150.
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