Respuesta:
5. 29 + X = 67
X = 38
6. 3X + 12 = 39
3X = 27
X = 9
7. 3X + 7 = 52
3X = 45
X = 15
8. 8 + 2X = 24
2X = 16
X = 8
9. 4X - 15 = 85
4X = 100
X = 25
10. 5X + 9 = 59
5X = 50
X = 10
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Respuesta:
5. 29 + X = 67
X = 38
6. 3X + 12 = 39
3X = 27
X = 9
7. 3X + 7 = 52
3X = 45
X = 15
8. 8 + 2X = 24
2X = 16
X = 8
9. 4X - 15 = 85
4X = 100
X = 25
10. 5X + 9 = 59
5X = 50
X = 10