(7x)+(54-x)=90

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Solution for (7x)+(54-x)=90 equation: 



(7x)+(54-x)=90

We move all terms to the left:

(7x)+(54-x)-(90)=0

We add all the numbers together, and all the variables

7x+(-1x+54)-90=0

We get rid of parentheses

7x-1x+54-90=0

We add all the numbers together, and all the variables

6x-36=0

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

6x=36

x=36/6

x=6

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