4x+9(9-x)=61

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Solution for 4x+9(9-x)=61 equation: 



4x+9(9-x)=61

We move all terms to the left:

4x+9(9-x)-(61)=0

We add all the numbers together, and all the variables

4x+9(-1x+9)-61=0

We multiply parentheses

4x-9x+81-61=0

We add all the numbers together, and all the variables

-5x+20=0

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

-5x=-20

x=-20/-5

x=+4

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