Solve for x
x=5
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30x-100+10x=100
Use the distributive property to multiply -10 by 10-x.
40x-100=100
Combine 30x and 10x to get 40x.
40x=100+100
Add 100 to both sides.
40x=200
Add 100 and 100 to get 200.
x=\frac{200}{40}
Divide both sides by 40.
x=5
Divide 200 by 40 to get 5.
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