25=7+.3k-12

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Solution for 25=7+.3k-12 equation: 



25=7+.3k-12

We move all terms to the left:

25-(7+.3k-12)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

-.3k+5+25=0

We add all the numbers together, and all the variables

-0.3k+30=0

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

-0.3k=-30

k=-30/-0.3

k=+100

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