8+0.40x=12+0.20x

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Solution for 8+0.40x=12+0.20x equation: 



8+0.40x=12+0.20x

We move all terms to the left:

8+0.40x-(12+0.20x)=0

We add all the numbers together, and all the variables

0.40x-(0.20x+12)+8=0

We get rid of parentheses

0.40x-0.20x-12+8=0

We add all the numbers together, and all the variables

0.2x-4=0

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

0.2x=4

x=4/0.2

x=20

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