4x-45=-9x+20

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Solution for 4x-45=-9x+20 equation: 



4x-45=-9x+20

We move all terms to the left:

4x-45-(-9x+20)=0

We get rid of parentheses

4x+9x-20-45=0

We add all the numbers together, and all the variables

13x-65=0

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

13x=65

x=65/13

x=5

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