0.4(r+3.4)=0.5(r+4.2

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Solution for 0.4(r+3.4)=0.5(r+4.2 equation: 



0.4(r+3.4)=0.5(r+4.2

We move all terms to the left:

0.4(r+3.4)-(0.5(r+4.2)=0

We multiply parentheses

0.4r-(0.5(r+4.2)+1.36=0

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