2.6+0.9x=-(-x-2.1)

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Solution for 2.6+0.9x=-(-x-2.1) equation: 



2.6+0.9x=-(-x-2.1)

We move all terms to the left:

2.6+0.9x-(-(-x-2.1))=0

We add all the numbers together, and all the variables

0.9x-(-(-1x-2.1))+2.6=0



We calculate terms in parentheses: -(-(-1x-2.1)), so:

-(-1x-2.1)

We get rid of parentheses

1x+2.1

We add all the numbers together, and all the variables

x+2.1

Back to the equation:

-(x+2.1)



We get rid of parentheses

0.9x-x-2.1+2.6=0

We add all the numbers together, and all the variables

-0.1x+0.5=0

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

-0.1x=-0.5

x=-0.5/-0.1

x=+5

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