7x+8x=-135

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Solution for 7x+8x=-135 equation: 



7x+8x=-135

We move all terms to the left:

7x+8x-(-135)=0

We add all the numbers together, and all the variables

15x+135=0

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

15x=-135

x=-135/15

x=-9

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