5k+70=40k+80

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Solution for 5k+70=40k+80 equation: 



5k+70=40k+80

We move all terms to the left:

5k+70-(40k+80)=0

We get rid of parentheses

5k-40k-80+70=0

We add all the numbers together, and all the variables

-35k-10=0

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

-35k=10

k=10/-35

k=-2/7

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