Question

resolva as expressão 45+{42-[18+(9-5)+5]}=

Answer 1

45+{42-[18+(9-5)+5]}
45+{42-[18+4+5]}
45+{42-27}
45+15
60

Answer 2

45 + {42 - [ 18 + (9 - 5) + 5]}

45 + {42 - [ 18 + 4 + 5]}

45 + { 42 - [ 27]}

45 + { 15}

= 60