40*x+130(55-x)=5340

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Solution for 40*x+130(55-x)=5340 equation: 



40x+130(55-x)=5340

We move all terms to the left:

40x+130(55-x)-(5340)=0

We add all the numbers together, and all the variables

40x+130(-1x+55)-5340=0

We multiply parentheses

40x-130x+7150-5340=0

We add all the numbers together, and all the variables

-90x+1810=0

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

-90x=-1810

x=-1810/-90

x=20+1/9

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