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3y + 2x = 29 | 1 | 3y + 2x = 29 +
7y = 49
y = 49/7
y = 7
2y - x = 10
2(7) - x = 10
14 - x = 10
-x = 10-14
-x = -4
x = 4
HP {4, 7}
3y + 2x = 29 | × 1 | ⇒ 3y + 2x = 29 +
7y = 49
y = 7
2y - x = 10
14 - x = 10
-x = -4
x = 4