8.7=20+1.3x

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Solution for 8.7=20+1.3x equation: 



8.7=20+1.3x

We move all terms to the left:

8.7-(20+1.3x)=0

We add all the numbers together, and all the variables

-(1.3x+20)+8.7=0

We get rid of parentheses

-1.3x-20+8.7=0

We add all the numbers together, and all the variables

-1.3x-11.3=0

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

-1.3x=11.3

x=11.3/-1.3

x=-8+0.9/1.3

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