0.3x-7=0.8x+15

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Solution for 0.3x-7=0.8x+15 equation: 



0.3x-7=0.8x+15

We move all terms to the left:

0.3x-7-(0.8x+15)=0

We get rid of parentheses

0.3x-0.8x-15-7=0

We add all the numbers together, and all the variables

-0.5x-22=0

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

-0.5x=22

x=22/-0.5

x=-44

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