mohanned9i mohanned9i
  • 20-05-2021
  • Mathematics
contestada

Twice a number added to another number is -8. The difference of the two numbers is 2. Find the
numbers.

Respuesta :

reinhard10158
reinhard10158 reinhard10158
  • 21-05-2021

Answer:

-2, -4

and

-1 1/3, -3 1/3

Step-by-step explanation:

2×x + y = -8

x - y = 2 or y - x = 2

first going for x-y=2

so, x = 2 + y

=> 2×(2+y) + y = -8

4 + 2y + y = -8

3y = -12

y = -4

=> x = 2 + -4 = -2

second going for y-x=2

-x = 2 -y

x = y - 2

=> 2×(y-2) + y = -8

2y - 4 + y = -8

3y = -4

y = -4/3 = -1 1/3

=> x = -4/3 - 2 = -3 1/3 (or -10/3)

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