Com es resol el sistema d'equacions -3x - 2y = 0 i 9x + 5y = - 6?

Resposta:

# y = 6 #

# x = -4 #

Explicació:

# -3x-2y = 0 #

# 9x + 5y = -6 #

# -2y = 3x #

# 9x = -5y-6 #

# y = -3x / 2 #

# 9x = 15x / 2-6 #

# y = -3x / 2 #

# 18x = 15x-12 #

# y = -3x / 2 #

# 3x = -12 #

# y = 12/2 #

# x = -4 #

# y = 6 #

# x = -4 #