87=8(3+k)+7

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Solution for 87=8(3+k)+7 equation: 



87=8(3+k)+7

We move all terms to the left:

87-(8(3+k)+7)=0

We add all the numbers together, and all the variables

-(8(k+3)+7)+87=0



We calculate terms in parentheses: -(8(k+3)+7), so:

8(k+3)+7

We multiply parentheses

8k+24+7

We add all the numbers together, and all the variables

8k+31

Back to the equation:

-(8k+31)



We get rid of parentheses

-8k-31+87=0

We add all the numbers together, and all the variables

-8k+56=0

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

-8k=-56

k=-56/-8

k=+7

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