7x+4-3+8x=15

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Solution for 7x+4-3+8x=15 equation: 



7x+4-3+8x=15

We move all terms to the left:

7x+4-3+8x-(15)=0

We add all the numbers together, and all the variables

15x-14=0

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

15x=14

x=14/15

x=14/15

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