-72=7(2+4k)+3(-7+5k)

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Solution for -72=7(2+4k)+3(-7+5k) equation: 



-72=7(2+4k)+3(-7+5k)

We move all terms to the left:

-72-(7(2+4k)+3(-7+5k))=0

We add all the numbers together, and all the variables

-(7(4k+2)+3(5k-7))-72=0



We calculate terms in parentheses: -(7(4k+2)+3(5k-7)), so:

7(4k+2)+3(5k-7)

We multiply parentheses

28k+15k+14-21

We add all the numbers together, and all the variables

43k-7

Back to the equation:

-(43k-7)



We get rid of parentheses

-43k+7-72=0

We add all the numbers together, and all the variables

-43k-65=0

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

-43k=65

k=65/-43

k=-1+22/43

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