10x+9=8x-9

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Solution for 10x+9=8x-9 equation: 



10x+9=8x-9

We move all terms to the left:

10x+9-(8x-9)=0

We get rid of parentheses

10x-8x+9+9=0

We add all the numbers together, and all the variables

2x+18=0

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

2x=-18

x=-18/2

x=-9

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