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5x-7-3x=9
Subtract 3x from both sides.
2x-7=9
Combine 5x and -3x to get 2x.
2x=9+7
Add 7 to both sides.
2x=16
Add 9 and 7 to get 16.
x=\frac{16}{2}
Divide both sides by 2.
x=8
Divide 16 by 2 to get 8.