42+180-(8x+3)+180-(10x+21)=180

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Solution for 42+180-(8x+3)+180-(10x+21)=180 equation: 



42+180-(8x+3)+180-(10x+21)=180

We move all terms to the left:

42+180-(8x+3)+180-(10x+21)-(180)=0

We add all the numbers together, and all the variables

-(8x+3)-(10x+21)+222=0

We get rid of parentheses

-8x-10x-3-21+222=0

We add all the numbers together, and all the variables

-18x+198=0

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

-18x=-198

x=-198/-18

x=+11

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