45+x+(8x+21)=180

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Solution for 45+x+(8x+21)=180 equation: 



45+x+(8x+21)=180

We move all terms to the left:

45+x+(8x+21)-(180)=0

We add all the numbers together, and all the variables

x+(8x+21)-135=0

We get rid of parentheses

x+8x+21-135=0

We add all the numbers together, and all the variables

9x-114=0

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

9x=114

x=114/9

x=12+2/3

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