I5=30-r

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Solution for I5=30-r equation:



5=30-I
We move all terms to the left:
5-(30-I)=0
We add all the numbers together, and all the variables
-(-1I+30)+5=0
We get rid of parentheses
1I-30+5=0
We add all the numbers together, and all the variables
I-25=0
We move all terms containing I to the left, all other terms to the right
I=25

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