0.7r+2=4.2r=1.5

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Solution for 0.7r+2=4.2r=1.5 equation: 



0.7r+2=4.2r=1.5

We move all terms to the left:

0.7r+2-(4.2r)=0

We add all the numbers together, and all the variables

0.7r-(+4.2r)+2=0

We get rid of parentheses

0.7r-4.2r+2=0

We add all the numbers together, and all the variables

-3.5r+2=0

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

-3.5r=-2

r=-2/-3.5

r=2/3.5

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