Solve for x
x=180
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4x-540=x
Use the distributive property to multiply 4 by x-135.
4x-540-x=0
Subtract x from both sides.
3x-540=0
Combine 4x and -x to get 3x.
3x=540
Add 540 to both sides. Anything plus zero gives itself.
x=\frac{540}{3}
Divide both sides by 3.
x=180
Divide 540 by 3 to get 180.
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