Solve for x
x = -\frac{39}{2} = -19\frac{1}{2} = -19.5
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7x+3-9x=42
Subtract 9x from both sides.
-2x+3=42
Combine 7x and -9x to get -2x.
-2x=42-3
Subtract 3 from both sides.
-2x=39
Subtract 3 from 42 to get 39.
x=\frac{39}{-2}
Divide both sides by -2.
x=-\frac{39}{2}
Fraction \frac{39}{-2} can be rewritten as -\frac{39}{2} by extracting the negative sign.
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Limits
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