3o+15=o+7

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Solution for 3o+15=o+7 equation: 



3o+15=o+7

We move all terms to the left:

3o+15-(o+7)=0

We get rid of parentheses

3o-o-7+15=0

We add all the numbers together, and all the variables

2o+8=0

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

2o=-8

o=-8/2

o=-4

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