80*0.70r=20*0.80r

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Solution for 80*0.70r=20*0.80r equation: 



80*0.70r=20*0.80r

We move all terms to the left:

80*0.70r-(20*0.80r)=0

We add all the numbers together, and all the variables

80*0.70r-(+20*0.80r)=0

Wy multiply elements

0r-(+20*0.80r)=0

We get rid of parentheses

0r-20*0.80r=0

We add all the numbers together, and all the variables

r-20*0.80r=0

Wy multiply elements

r+0r=0

We add all the numbers together, and all the variables

2r=0

r=0/2

r=0

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