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Resolvemos :
2x + 1 + 2x + 3 + 2x + 5 = 129
2x + 2x + 2x + 1 + 3 + 5 = 129
6x + 9 = 129
6x = 129 - 9
6x =120
x = 120/6
x = 20
2x + 1 = 2 (20) + 1 = 40 + 1 = 41
2x + 3 = 2 (20) + 3 = 40 + 3 = 43
2x + 5 = 2 (20) + 5 = 40 + 5 = 45
Solución : Los números son : 41, 43 y 45
3x + 9 = 129
3x = 129-9
3x = 120
x = 40
- renplaza:
(40+1) +(40+3) + (40+5) = 129
41 + 43 + 45 = 129