5x-7x=8+4

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Solution for 5x-7x=8+4 equation: 



5x-7x=8+4

We move all terms to the left:

5x-7x-(8+4)=0

We add all the numbers together, and all the variables

5x-7x-12=0

We add all the numbers together, and all the variables

-2x-12=0

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

-2x=12

x=12/-2

x=-6

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