Solve for x
x=\frac{3}{4}=0.75
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-3x-21-7+9x+20=-6x+1
Combine 5x and -8x to get -3x.
-3x-28+9x+20=-6x+1
Subtract 7 from -21 to get -28.
6x-28+20=-6x+1
Combine -3x and 9x to get 6x.
6x-8=-6x+1
Add -28 and 20 to get -8.
6x-8+6x=1
Add 6x to both sides.
12x-8=1
Combine 6x and 6x to get 12x.
12x=1+8
Add 8 to both sides.
12x=9
Add 1 and 8 to get 9.
x=\frac{9}{12}
Divide both sides by 12.
x=\frac{3}{4}
Reduce the fraction \frac{9}{12} to lowest terms by extracting and canceling out 3.
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