12(k-1)=7(k-9.81)

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Solution for 12(k-1)=7(k-9.81) equation: 



12(k-1)=7(k-9.81)

We move all terms to the left:

12(k-1)-(7(k-9.81))=0

We multiply parentheses

12k-(7(k-9.81))-12=0



We calculate terms in parentheses: -(7(k-9.81)), so:

7(k-9.81)

We multiply parentheses

7k-68.67

Back to the equation:

-(7k-68.67)



We get rid of parentheses

12k-7k+68.67-12=0

We add all the numbers together, and all the variables

5k+56.67=0

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

5k=-56.67

k=-56.67/5

k=-11+1/2.9940119760479

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