8x-7x=9+4

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Solution for 8x-7x=9+4 equation: 



8x-7x=9+4

We move all terms to the left:

8x-7x-(9+4)=0

We add all the numbers together, and all the variables

8x-7x-13=0

We add all the numbers together, and all the variables

x-13=0

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

x=13

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