3x+5x-9=54-x

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Solution for 3x+5x-9=54-x equation: 



3x+5x-9=54-x

We move all terms to the left:

3x+5x-9-(54-x)=0

We add all the numbers together, and all the variables

3x+5x-(-1x+54)-9=0

We add all the numbers together, and all the variables

8x-(-1x+54)-9=0

We get rid of parentheses

8x+1x-54-9=0

We add all the numbers together, and all the variables

9x-63=0

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

9x=63

x=63/9

x=7

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