tpriytwid4ianaFelto tpriytwid4ianaFelto
  • 07-03-2017
  • Mathematics
contestada

A certain number is subtracted from 20. the result multiplied by 3 is equal to 45. what is the number?

Respuesta :

erinjanelle
erinjanelle erinjanelle
  • 07-03-2017
the correct number is 15
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H1a2r3s4h5 H1a2r3s4h5
  • 07-03-2017
Let the number is x
so 20-x=20-x
now 3×(20-x)=45
60-3x=45
-3x=45-60
-3x=-15
x=-15/-3
x=5
So the required number is5
Answer Link

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