Kako rešiti naslednji linearni sistem ?: 7x-2y = 8, 5x + 2y = 4?

Odgovor:

Odgovor: #(1, -1/2)#

Pojasnilo:

Eq. 1: # 7x -2y = 8 #

Eq. 2: # 5x + 2y = 4 #

Dodamo lahko obe enačbi

# (7x-2y) + barva (rdeča) (5x + 2y) = 8 + 4 #

# 12x = 12 # # => barva (modra) (x = 1 #

Zamenjava # x = 1 #

# 7 (1) -2y = 8 #

# 7-2y = 8 #

# -2y = 8- 7 #

# -2y = 1 => barva (modra) (y = -1/2) #