7r+14=42

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Solution for 7r+14=42 equation: 



7r+14=42

We move all terms to the left:

7r+14-(42)=0

We add all the numbers together, and all the variables

7r-28=0

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

7r=28

r=28/7

r=4

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