8=2.1x-1.3x

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Solution for 8=2.1x-1.3x equation: 



8=2.1x-1.3x

We move all terms to the left:

8-(2.1x-1.3x)=0

We add all the numbers together, and all the variables

-(+0.8x)+8=0

We get rid of parentheses

-0.8x+8=0

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

-0.8x=-8

x=-8/-0.8

x=+10

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