3x=7x+40=180

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Solution for 3x=7x+40=180 equation: 



3x=7x+40=180

We move all terms to the left:

3x-(7x+40)=0

We get rid of parentheses

3x-7x-40=0

We add all the numbers together, and all the variables

-4x-40=0

We move all terms containing x to the left, all other terms to the right

-4x=40

x=40/-4

x=-10

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