7=20x-9

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Solution for 7=20x-9 equation: 



7=20x-9

We move all terms to the left:

7-(20x-9)=0

We get rid of parentheses

-20x+9+7=0

We add all the numbers together, and all the variables

-20x+16=0

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

-20x=-16

x=-16/-20

x=4/5

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