niya6535
niya6535 niya6535
  • 16-04-2021
  • Mathematics
contestada

The difference between two numbers is 10 and their sum is 20. Find the biggest number.

Respuesta :

thebecks
thebecks thebecks
  • 16-04-2021

Answer:

15

Step-by-step explanation:

x - y = 10, then x = 10 + y

x + y = 20

substitute for x:

10 + y + y = 20

2y = 10

y = 5

x = 10 + 5 = 15

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