7x+4x-45=8x+45

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Solution for 7x+4x-45=8x+45 equation: 



7x+4x-45=8x+45

We move all terms to the left:

7x+4x-45-(8x+45)=0

We add all the numbers together, and all the variables

11x-(8x+45)-45=0

We get rid of parentheses

11x-8x-45-45=0

We add all the numbers together, and all the variables

3x-90=0

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

3x=90

x=90/3

x=30

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