drewb123thomas drewb123thomas
  • 15-01-2020
  • Mathematics
contestada

One number is 7 more than another number, and their sum is 13. Find the two numbers

Respuesta :

Valentino2019
Valentino2019 Valentino2019
  • 18-01-2020

Answer:

10 and 3

Step-by-step explanation:

let the first number be x and the second be y

x=y+7------i

their sum is 13

x+y=13-----ii

substituting for x in ii

y+7+y=13

collecting like terms

2y=13-7

2y=6

y=3

recall ii and substitute for y

x+y=13

x+3=13

collecting like terms

x=10

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