math
posted by emily .
i have 3 kg 4 kg and 5 kg on one side and 5 kg and 7 kg on the other side which two tiles do i swap to have the same amount on both sides

math 
MathMate
3 + 4 + 5 on the left for a total of ?
5 + 7 on the right for a total of ?
Are they equal? If they are not, then you'll need to swap.
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i have 3 kg 4 kg and 5 kg on one side and 5 kg and 7 kg on the other side which two tiles do i swap to have the same amount on both sides