10+9x=-80

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Solution for 10+9x=-80 equation: 



10+9x=-80

We move all terms to the left:

10+9x-(-80)=0

We add all the numbers together, and all the variables

9x+90=0

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

9x=-90

x=-90/9

x=-10

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