40k+70=30+90

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Solution for 40k+70=30+90 equation: 



40k+70=30+90

We move all terms to the left:

40k+70-(30+90)=0

We add all the numbers together, and all the variables

40k+70-120=0

We add all the numbers together, and all the variables

40k-50=0

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

40k=50

k=50/40

k=1+1/4

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