A farmer has ducks and cows on his farm. He does not remember how many duck and cows are on the farm. If there are total of 26 a
1 answer:
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Answer:
6r+7=13+7r
6r+7=7r+13
6r+7−7r=7r+13−7r
−r+7=13
−r+7−7=13−7
−r=6
=
r=−6
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