7x-2x=23+12

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Solution for 7x-2x=23+12 equation: 



7x-2x=23+12

We move all terms to the left:

7x-2x-(23+12)=0

We add all the numbers together, and all the variables

7x-2x-35=0

We add all the numbers together, and all the variables

5x-35=0

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

5x=35

x=35/5

x=7

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