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2 years ago

Two times a number is the result when 7 times the same number is taken away from 99. What is the number?

Mathematics

1 answer:

OLEGan [10]2 years ago

7 0

2x=99-7x

9x=99

x = 11

2x11 = 22

99-&7*11) = 22

so the number is 11

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