-245.7=4.2(7.2a-0.9)

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Solution for -245.7=4.2(7.2a-0.9) equation: 



-245.7=4.2(7.2a-0.9)

We move all terms to the left:

-245.7-(4.2(7.2a-0.9))=0



We calculate terms in parentheses: -(4.2(7.2a-0.9)), so:

4.2(7.2a-0.9)

We multiply parentheses

29.4a-3.78

Back to the equation:

-(29.4a-3.78)



We get rid of parentheses

-29.4a+3.78-245.7=0

We add all the numbers together, and all the variables

-29.4a-241.92=0

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

-29.4a=241.92

a=241.92/-29.4

a=-8+3.906976744186/17.093023255814

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