8.7x=20+1.3x

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Solution for 8.7x=20+1.3x equation: 



8.7x=20+1.3x

We move all terms to the left:

8.7x-(20+1.3x)=0

We add all the numbers together, and all the variables

8.7x-(1.3x+20)=0

We get rid of parentheses

8.7x-1.3x-20=0

We add all the numbers together, and all the variables

7.4x-20=0

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

7.4x=20

x=20/7.4

x=2+4.3333333333333/6.1666666666667

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