Respuesta:
Me das coronas?
Porfavor
Y te sigo
Explicación paso a paso:
a) (20+10) +38 = 20+ (10+38)
30 + 38 = 20+ 48
68 = 68
b) (40+12 ) + 15 = 40+ (12+15)
52 + 15 = 40+ 27
67 = 67
c) (37+12) +20 = 37 + (12+20)
49 + 20 = 37 + 32
69 = 69
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Respuesta:
Me das coronas?
Porfavor
Y te sigo
Verified answer
Explicación paso a paso:
a) (20+10) +38 = 20+ (10+38)
30 + 38 = 20+ 48
68 = 68
b) (40+12 ) + 15 = 40+ (12+15)
52 + 15 = 40+ 27
67 = 67
c) (37+12) +20 = 37 + (12+20)
49 + 20 = 37 + 32
69 = 69