Solve for x
x=-1.1
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1.2x+3.9-0.7x=3.35
Subtract 0.7x from both sides.
0.5x+3.9=3.35
Combine 1.2x and -0.7x to get 0.5x.
0.5x=3.35-3.9
Subtract 3.9 from both sides.
0.5x=-0.55
Subtract 3.9 from 3.35 to get -0.55.
x=\frac{-0.55}{0.5}
Divide both sides by 0.5.
x=\frac{-55}{50}
Expand \frac{-0.55}{0.5} by multiplying both numerator and the denominator by 100.
x=-\frac{11}{10}
Reduce the fraction \frac{-55}{50} to lowest terms by extracting and canceling out 5.
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