8x+4=-x-5

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Solution for 8x+4=-x-5 equation: 



8x+4=-x-5

We move all terms to the left:

8x+4-(-x-5)=0

We add all the numbers together, and all the variables

8x-(-1x-5)+4=0

We get rid of parentheses

8x+1x+5+4=0

We add all the numbers together, and all the variables

9x+9=0

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

9x=-9

x=-9/9

x=-1

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