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yKpoI14uk [10]
4 years ago
10

The sum of 7 consecutive odd numbers is 525. What is the largest of the seven numbers?

Mathematics
1 answer:
Kobotan [32]4 years ago
3 0
X=1st con odd #
x+2=2nd con odd #
x+4= 3rd con odd #
x+6= 4th con odd #
x+8= 5th con odd #
x+10= 6th con odd #
x+12= 7th con odd #

x+x+2+x+4+x+6+x+8+x+10+x+12=525
7x+42=525
7x+42-42=525-42
7x=483
7×/7=483/7
x=69
69+12=81
81 is the answer :)
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