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2y + x = 22
2 * (20 - 2x) + x = 22
40 - 4x + x = 22
- 3x = 22 -40 = - 18
x = - 18/ - 3 = 6
2x + y = 20
2 * 6 + y = 20
12 + y = 20
y = 20 - 12 = 8
odp
x = 6 , y = 8