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5x + 7y = 1
------------------ -
diubah menjadi:
30x - 25y = 140
30x - 42y = 6
------------------------ -
17y = 134
y = 134 : 17
y = 7,8
5x + 7(7,8) = 1
5x + 56 = 1
5x = 1 - 56
5x = -55
x = -55 : 5
x = -11
jadi
X = -11
Y = 7,8
5x + 7y= 1 x6 30x + 42y = 6 -
67y = 134
y = 134/67
y = 2
6x - 5y = 28 x7 42x - 35 y = 196
5x + 7y= 1 x5 25x + 35y = 5 +
67x = 201
x = 201/3
x = 3