9x+1-7X=-20

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Solution for 9x+1-7X=-20 equation: 



9x+1-7x=-20

We move all terms to the left:

9x+1-7x-(-20)=0

We add all the numbers together, and all the variables

2x+21=0

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

2x=-21

x=-21/2

x=-10+1/2

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