Solve for x
x=4
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x+4x+20=40
Use the distributive property to multiply 4 by x+5.
5x+20=40
Combine x and 4x to get 5x.
5x=40-20
Subtract 20 from both sides.
5x=20
Subtract 20 from 40 to get 20.
x=\frac{20}{5}
Divide both sides by 5.
x=4
Divide 20 by 5 to get 4.
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