8x+4x+3x=7-12

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Solution for 8x+4x+3x=7-12 equation: 



8x+4x+3x=7-12

We move all terms to the left:

8x+4x+3x-(7-12)=0

We add all the numbers together, and all the variables

8x+4x+3x-(-5)=0

We add all the numbers together, and all the variables

15x+5=0

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

15x=-5

x=-5/15

x=-1/3

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