20=4.2-2.2x

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Solution for 20=4.2-2.2x equation: 



20=4.2-2.2x

We move all terms to the left:

20-(4.2-2.2x)=0

We add all the numbers together, and all the variables

-(-2.2x+4.2)+20=0

We get rid of parentheses

2.2x-4.2+20=0

We add all the numbers together, and all the variables

2.2x+15.8=0

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

2.2x=-15.8

x=-15.8/2.2

x=-7+0.4/2.2

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