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x = 4 - 29
x = - 25
2x - y = 3
2. -25 - y = 3
-50 - y = 3
- y = 3 + 50
- y = 53
y = -53
x = 4 - 2y
2x - y = 3
2(4 - 2y) - y = 3
8 - 4y - y = 3
-4y - y = 3 - 8
-5y = -5
y = 1
x + 2y = 4
x + 2(1) = 4
x + 2 = 4
x = 4 - 2
x = 2
Himpunan Penyelesaian = {x, y} = {2, 1}