-7x-8x=-15-30

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Solution for -7x-8x=-15-30 equation: 



-7x-8x=-15-30

We move all terms to the left:

-7x-8x-(-15-30)=0

We add all the numbers together, and all the variables

-7x-8x-(-45)=0

We add all the numbers together, and all the variables

-15x+45=0

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

-15x=-45

x=-45/-15

x=+3

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