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Tcecarenko [31]
3 years ago
11

The sum of two numbers is 84 one number is three times the other find the numbers

Mathematics
2 answers:
lidiya [134]3 years ago
6 0
X + y = 84
x = 3y

Plug in 3y for x

(3y) + y = 84
4y = 84
4y/4 = 84/4
y = 21

x = 3y
x = 3(21)
x = 63

x = 63, y = 21

hope this helps
bija089 [108]3 years ago
5 0
It is 63 and 21 because 21x3=63
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