8x+9+4x+9=8x-12

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Solution for 8x+9+4x+9=8x-12 equation: 



8x+9+4x+9=8x-12

We move all terms to the left:

8x+9+4x+9-(8x-12)=0

We add all the numbers together, and all the variables

12x-(8x-12)+18=0

We get rid of parentheses

12x-8x+12+18=0

We add all the numbers together, and all the variables

4x+30=0

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

4x=-30

x=-30/4

x=-7+1/2

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