7.x-2.x=45

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Solution for 7.x-2.x=45 equation: 



7.x-2.x=45

We move all terms to the left:

7.x-2.x-(45)=0

We add all the numbers together, and all the variables

5x-45=0

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

5x=45

x=45/5

x=9

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