2.80=(-0.75+c)7

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Solution for 2.80=(-0.75+c)7 equation: 



2.80=(-0.75+c)7

We move all terms to the left:

2.80-((-0.75+c)7)=0

We add all the numbers together, and all the variables

-((c-0.75)7)+2.80=0

We add all the numbers together, and all the variables

-((c-0.75)7)+2.8=0



We calculate terms in parentheses: -((c-0.75)7), so:

(c-0.75)7

We multiply parentheses

7c-5.25

Back to the equation:

-(7c-5.25)



We get rid of parentheses

-7c+5.25+2.8=0

We add all the numbers together, and all the variables

-7c+8.05=0

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

-7c=-8.05

c=-8.05/-7

c=1+1/6.6666666666667

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