Solve for x
x=20
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3.5x-9-2.4x=13
Subtract 2.4x from both sides.
1.1x-9=13
Combine 3.5x and -2.4x to get 1.1x.
1.1x=13+9
Add 9 to both sides.
1.1x=22
Add 13 and 9 to get 22.
x=\frac{22}{1.1}
Divide both sides by 1.1.
x=\frac{220}{11}
Expand \frac{22}{1.1} by multiplying both numerator and the denominator by 10.
x=20
Divide 220 by 11 to get 20.
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