edugaba2006 edugaba2006
  • 07-02-2020
  • Mathematics
contestada

the sum of two numbers is 21. the secound number is six times the first number. work out the two numbers?

Respuesta :

bhuvna789456
bhuvna789456 bhuvna789456
  • 11-02-2020

The numbers are 3 and 18

Step-by-step explanation:

Step 1: Given details are sum of numbers = 21, let the numbers be x and y. Form equations out of the given details.

⇒ x + y = 21 ---- (1)

⇒ y = 6x --------- (2)

Step 2: Substitute (2) in (1)

⇒ x + 6x = 21

⇒7x = 21

⇒x = 3

  • Step 3: Find the value of y using x

⇒ y = 6 × 3

⇒ y = 18

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