13.8=2.65(c-11)+-2.1

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Solution for 13.8=2.65(c-11)+-2.1 equation: 



13.8=2.65(c-11)+-2.1

We move all terms to the left:

13.8-(2.65(c-11)+-2.1)=0

We use the square of the difference formula

-(2.65(c-11)-2.1)+13.8=0



We calculate terms in parentheses: -(2.65(c-11)-2.1), so:

2.65(c-11)-2.1

We multiply parentheses

2.65c-29.15-2.1

We add all the numbers together, and all the variables

2.65c-31.25

Back to the equation:

-(2.65c-31.25)



We get rid of parentheses

-2.65c+31.25+13.8=0

We add all the numbers together, and all the variables

-2.65c+45.05=0

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

-2.65c=-45.05

c=-45.05/-2.65

c=+17

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