chris9385 chris9385

18-06-2019
Mathematics

contestada

The sum of two numbers is 28. The first number, x, is three
times the second number, y.

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

27-06-2019

Answer:

x=21

y= 7

Step-by-step explanation:

x+y = 28

x = 3y

Substitute the second equation into the first

3y+y = 28

4y = 28

Divide by 4

4y/4 = 28/4

y = 7

Now we need to find x

x = 3*y

x = 3*7

x = 21

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