Seudónimo Seudónimo
  • 25-11-2020
  • Mathematics
contestada

someone pls help and dont troll

someone pls help and dont troll class=

Respuesta :

lavenderlillacs25 lavenderlillacs25
  • 25-11-2020

Answer: A

Step-by-step explanation:

2x + 9 = 15

2x = 6

x = 3

2x+9 = -15

2x = -24

x = -12

Answer Link
khanhchijuveams khanhchijuveams
  • 25-11-2020
2x+9=15 or 2x+9=-15

- Case 1: 2x+9=15. Then 2x=15-9=6. Thus, x=3.
- Case 2: 2x+9=-15. Then 2x=-15-9=-24. Thus x=-12.

Hence x=3 or x=-12.
Answer Link

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