8x+7=9-x-4

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



8x+7=9-x-4

We move all terms to the left:

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

We add all the numbers together, and all the variables

8x-(-1x+5)+7=0

We get rid of parentheses

8x+1x-5+7=0

We add all the numbers together, and all the variables

9x+2=0

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

9x=-2

x=-2/9

x=-2/9

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