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Reika [66]
3 years ago
5

Bob and Caitlyn are playing a trading-card game. Between them, they have 81 cards. Bob has 7 fewer cards than Caitlyn.

Mathematics
2 answers:
sergejj [24]3 years ago
7 0
B=c-7 and b+c=81 using b from the first in the second gives you:

(c-7)+c=81

2c-7=81

2c=88

c=44 so b=81-44=37

So Bob has 37 cards and Caitlyn has 44 cards
Alina [70]3 years ago
3 0
We know that Bob and Caitlyn are playing a trading-card game. Between them, they have 81 cards. <span>Bob has 7 fewer cards than Caitlyn. Since Bob has 7 cards fewer them Caitlyn we have to divide by 2 and subtract 7. 

81 / 2 = 40 [rounded] 

40 - 7 = cards Bob has 

= 33 cards bob has 


</span>
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