0.9-2.1+0.9=2.5(5-x)

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Solution for 0.9-2.1+0.9=2.5(5-x) equation: 



0.9-2.1+0.9=2.5(5-x)

We move all terms to the left:

0.9-2.1+0.9-(2.5(5-x))=0

We add all the numbers together, and all the variables

-(2.5(-1x+5))+0.9-2.1+0.9=0

We add all the numbers together, and all the variables

-(2.5(-1x+5))-0.3=0



We calculate terms in parentheses: -(2.5(-1x+5)), so:

2.5(-1x+5)

We multiply parentheses

-2.5x+12.5

Back to the equation:

-(-2.5x+12.5)



We get rid of parentheses

2.5x-12.5-0.3=0

We add all the numbers together, and all the variables

2.5x-12.8=0

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

2.5x=12.8

x=12.8/2.5

x=5+0.3/2.5

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