Seudónimo
Seudónimo
25-11-2020
Mathematics
contestada
someone pls help and dont troll
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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