20.9=-2.5x-51.6

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Solution for 20.9=-2.5x-51.6 equation: 



20.9=-2.5x-51.6

We move all terms to the left:

20.9-(-2.5x-51.6)=0

We get rid of parentheses

2.5x+51.6+20.9=0

We add all the numbers together, and all the variables

2.5x+72.5=0

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

2.5x=-72.5

x=-72.5/2.5

x=-29

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