Respuesta:
a) si
b) no
c)si
d)si
Solución:
3+5-9=6-7
8-9 = -1
-1 = -1
12+28=30+0
40 ≠ 30
81÷9 = 27÷3
9 = 9
7x9=62+1
63=63
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Respuesta:
a) si
b) no
c)si
d)si
Solución:
3+5-9=6-7
8-9 = -1
-1 = -1
12+28=30+0
40 ≠ 30
81÷9 = 27÷3
9 = 9
7x9=62+1
63=63