x+8x-9=7x+4

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Solution for x+8x-9=7x+4 equation: 



x+8x-9=7x+4

We move all terms to the left:

x+8x-9-(7x+4)=0

We add all the numbers together, and all the variables

9x-(7x+4)-9=0

We get rid of parentheses

9x-7x-4-9=0

We add all the numbers together, and all the variables

2x-13=0

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

2x=13

x=13/2

x=6+1/2

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