540=x+x+(x-30)+(x-30)+(x-30)

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Solution for 540=x+x+(x-30)+(x-30)+(x-30) equation: 



540=x+x+(x-30)+(x-30)+(x-30)

We move all terms to the left:

540-(x+x+(x-30)+(x-30)+(x-30))=0



We calculate terms in parentheses: -(x+x+(x-30)+(x-30)+(x-30)), so:

x+x+(x-30)+(x-30)+(x-30)

We add all the numbers together, and all the variables

2x+(x-30)+(x-30)+(x-30)

We get rid of parentheses

2x+x+x+x-30-30-30

We add all the numbers together, and all the variables

5x-90

Back to the equation:

-(5x-90)



We get rid of parentheses

-5x+90+540=0

We add all the numbers together, and all the variables

-5x+630=0

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

-5x=-630

x=-630/-5

x=+126

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