Respuestas
Respuesta:
1. (V)
2. (F)
3. (V)
4. (F)
5. (V)
6. (V)
7. (F)
8. (V)
9. (V)
10. (F)
11. (V)
12. (V)
Explicación paso a paso:
1) 3+8+7 = 3+7+8
11+7 = 10+8
18 = 18
2) 3+8-7 = 3+7-8
11-7 = 10-8
4 = 2
3) 3.5+2 = 5.3+2
15+2 = 15+2
17 = 17
4) 3.5+2 = 3.2+5
15+2 = 6+5
17 = 11
5) 9-(2+4) = (9-2)+4
9 - 6 = 7 + 4
3 = 3
6) 9+(2+4) = (9+2)+4
9 + 6 = 11 + 4
15 = 15
7) 5.(2+3) = (5.2)+3
5 . 5 = 10 + 3
25 = 13
8) 5.(2.3) = (5.2).3
5 . 6 = 10 . 3
30 = 30
9) 5.(2+7) = (5.2) + (5.7)
5 . 9 = 10 + 35
45 = 45
10) 5+(2+7) = (5+2) + (5+7)
5 + 9 = 7 + 12
14 = 19
11) 7.(5-3) = (7.5) - (7.3)
7 . 2 = 35 - 21
14 = 14
12) 9 . 8 + 1 = 8 . 9 + 1
72 + 1 = 72 + 1
73 = 73