Solve for x
x=-\frac{3}{4}=-0.75
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4x=18-21
Subtract 21 from both sides.
4x=-3
Subtract 21 from 18 to get -3.
x=\frac{-3}{4}
Divide both sides by 4.
x=-\frac{3}{4}
Fraction \frac{-3}{4} can be rewritten as -\frac{3}{4} by extracting the negative sign.
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