Respuesta:
a) 43 + 38 = 81
b) 67 + 33 = 100
c) 386 - 158 = 228
d) (54) ( 100 ) = 5400
e) ( 15 ) (15) = 225
f) 1008 - 972 = 36
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Respuesta:
a) 43 + 38 = 81
b) 67 + 33 = 100
c) 386 - 158 = 228
d) (54) ( 100 ) = 5400
e) ( 15 ) (15) = 225
f) 1008 - 972 = 36