riosluisa118
riosluisa118 riosluisa118
  • 24-07-2021
  • Mathematics
contestada

The sum of two numbers is 10. Five times the first number plus three times the second number is 36

Respuesta :

mhanifa
mhanifa mhanifa
  • 24-07-2021

Answer:

  • 3 and 7

Step-by-step explanation:

  • a + b = 10
  • 5a + 3b = 36

5 times the first equation minus the second one:

  • 5(a + b) - 5a - 3b = 5(10) - 36
  • 2b = 14
  • b = 7

Find a:

  • a + 7 = 10
  • a = 3

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