10(7-10k)+k=-821

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Solution for 10(7-10k)+k=-821 equation: 



10(7-10k)+k=-821

We move all terms to the left:

10(7-10k)+k-(-821)=0

We add all the numbers together, and all the variables

10(-10k+7)+k-(-821)=0

We add all the numbers together, and all the variables

k+10(-10k+7)+821=0

We multiply parentheses

k-100k+70+821=0

We add all the numbers together, and all the variables

-99k+891=0

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

-99k=-891

k=-891/-99

k=+9

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