Respuesta :
Answer:
The number of red fish are 9
Step-by-step explanation:
X = number red fish
Y = number orange fish
then,
X + Y = 30
Y = 12 + X
then replacing Y
X + (12 + X) = 30
2X = 18
X = 9
Best regards
Answer:
The number of red fish are 9
Step-by-step explanation:
X = number red fish
Y = number orange fish
then,
X + Y = 30
Y = 12 + X
then replacing Y
X + (12 + X) = 30
2X = 18
X = 9
Best regards