8+3.x=80-3.x

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Solution for 8+3.x=80-3.x equation: 



8+3.x=80-3.x

We move all terms to the left:

8+3.x-(80-3.x)=0

We add all the numbers together, and all the variables

3.x-(-3x+80)+8=0

We get rid of parentheses

3.x+3x-80+8=0

We add all the numbers together, and all the variables

6x-72=0

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

6x=72

x=72/6

x=12

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