7x+1x=12+5x

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Solution for 7x+1x=12+5x equation: 



7x+1x=12+5x

We move all terms to the left:

7x+1x-(12+5x)=0

We add all the numbers together, and all the variables

7x+1x-(5x+12)=0

We add all the numbers together, and all the variables

8x-(5x+12)=0

We get rid of parentheses

8x-5x-12=0

We add all the numbers together, and all the variables

3x-12=0

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

3x=12

x=12/3

x=4

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