Solve for x
x=4
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20x-7-16x=9
Subtract 16x from both sides.
4x-7=9
Combine 20x and -16x to get 4x.
4x=9+7
Add 7 to both sides.
4x=16
Add 9 and 7 to get 16.
x=\frac{16}{4}
Divide both sides by 4.
x=4
Divide 16 by 4 to get 4.
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