-25-k=3(5-7k)

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Solution for -25-k=3(5-7k) equation: 



-25-k=3(5-7k)

We move all terms to the left:

-25-k-(3(5-7k))=0

We add all the numbers together, and all the variables

-k-(3(-7k+5))-25=0

We add all the numbers together, and all the variables

-1k-(3(-7k+5))-25=0



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

3(-7k+5)

We multiply parentheses

-21k+15

Back to the equation:

-(-21k+15)



We get rid of parentheses

-1k+21k-15-25=0

We add all the numbers together, and all the variables

20k-40=0

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

20k=40

k=40/20

k=2

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