Question

calculos combinados 1)47+[38-(6+27)]+{5+[4-(3+1]}+[54-(17+5)]=

Answer 1

47 + [38- (6 + 27)] + {5 + [4- (3+1]} + [54- (17 + 5 ) ] = 
47 + [38 - 33] + {5 + [4- 4 ]} + [54 - 22 ] =
47 + 5 + {5 + 0 } + 32 = 
47 + 5 + 5 + 32 =
52 + 5 + 32 = 
57 + 32 = 
89