7x+5x=126

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Solution for 7x+5x=126 equation: 



7x+5x=126

We move all terms to the left:

7x+5x-(126)=0

We add all the numbers together, and all the variables

12x-126=0

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

12x=126

x=126/12

x=10+1/2

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