-7x-9=-21+31

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Solution for -7x-9=-21+31 equation: 



-7x-9=-21+31

We move all terms to the left:

-7x-9-(-21+31)=0

We add all the numbers together, and all the variables

-7x-9-10=0

We add all the numbers together, and all the variables

-7x-19=0

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

-7x=19

x=19/-7

x=-2+5/7

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