20x+9=10x-9

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



20x+9=10x-9

We move all terms to the left:

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

We get rid of parentheses

20x-10x+9+9=0

We add all the numbers together, and all the variables

10x+18=0

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

10x=-18

x=-18/10

x=-1+4/5

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