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13x + 7y = 8 |x7
7x + 13y = 32 |x13
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91x + 49y = 56
91x + 169y = 416
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(-120)y = (-360)
y =
y = 3
Di substitusi kn nilai y = 3, maka tentukan nilai x, diperoleh
13x + 7y = 8
13x + 7(3) = 8
13x + 21 = 8
13x = 8 - 21
13x = (-13)
x =
x = (-1)
Jadi nilai himpunan penyelesaian (HP) = {(-1) , 3}