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3x + 4y = 1 l *5 l 15x + 20y = 5
---------------------- -
- 11y = 22
y = 22/-11
y = -2
3x + 4y = 1
3x + 4.(-2) = 1
3x + -8 = 1
3x = 1 + 8
3x = 9
x = 9/3
x = 3
Maka, x = 3 dan y = -2
3x + 4y =1 (x3)
⇒ 20x + 12y=36
9x + 12y= 3 -
⇒ 11x=33
x= 3 ini mencari x
Mencari y
5x + 3y=9(x3)
3x + 4y=1(x5)
⇒15x + 9y=27
15x + 20y=5 -
-11y=5
y= -0,46