21-9x+2x=10x-20

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Solution for 21-9x+2x=10x-20 equation: 



21-9x+2x=10x-20

We move all terms to the left:

21-9x+2x-(10x-20)=0

We add all the numbers together, and all the variables

-7x-(10x-20)+21=0

We get rid of parentheses

-7x-10x+20+21=0

We add all the numbers together, and all the variables

-17x+41=0

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

-17x=-41

x=-41/-17

x=2+7/17

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