x+x-2.8=90

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Solution for x+x-2.8=90 equation: 



x+x-2.8=90

We move all terms to the left:

x+x-2.8-(90)=0

We add all the numbers together, and all the variables

2x-92.8=0

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

2x=92.8

x=92.8/2

x=46+0.8/2

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