8x+9=7x-9

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



8x+9=7x-9

We move all terms to the left:

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

We get rid of parentheses

8x-7x+9+9=0

We add all the numbers together, and all the variables

x+18=0

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

x=-18

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