7(7k+5)=378

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Solution for 7(7k+5)=378 equation: 



7(7k+5)=378

We move all terms to the left:

7(7k+5)-(378)=0

We multiply parentheses

49k+35-378=0

We add all the numbers together, and all the variables

49k-343=0

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

49k=343

k=343/49

k=7

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