Solve for x
x=10
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7x-30-3x=10
Subtract 3x from both sides.
4x-30=10
Combine 7x and -3x to get 4x.
4x=10+30
Add 30 to both sides.
4x=40
Add 10 and 30 to get 40.
x=\frac{40}{4}
Divide both sides by 4.
x=10
Divide 40 by 4 to get 10.
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