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(1). 4x+1 / 3 - y+2 / 7 = -6 ----> ×21
(2). x-1 / 5 + y-1 / 2 = 1 --------> ×10

(1). 28x + 7 - 3y - 6 = -126
(2). 2x - 2 + 5y - 5 = 10

(1). 28x - 3y = -127 ------> ×1
(2). 2x + 5y = 17 -------> ×14

(1). 28x - 3y = -127
(2). 28x + 70y = 238
_____________-
-73y = - 365
y = 5
subtitusikan ke (2)
2x + 5y = 17
2x + 25 = 17
2x = -8
x = -4
x= -4, y= 5 (B)