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-7x+2y=-6 |1 ⇒ -7x + 2y = -6 -
11x = 22
x = 22 ÷ 11
x = 2
subtitusi x = 2 ke persamaan
2x + y = 8
2(2)+y=8
4+y = 8
y = 8 - 4
y = 4
jadi himpunan penyelesaiannya adalah {2, 4}