makaylagray520 makaylagray520
  • 30-01-2018
  • Mathematics
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the sum of two numbers is 84 one number is three times the other find the numbers

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matthew210mgp0vae0
matthew210mgp0vae0 matthew210mgp0vae0
  • 30-01-2018
it is 63 and 21 because 21x3=63
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AnimeBrainly
AnimeBrainly AnimeBrainly
  • 30-01-2018
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
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