Question

a)26+{[(26-9+3)- √36:3+3.18]-66}

Answer 1

26+{[(26-9+3)- √36:3+3.18]-66}=
26+{[ 20 - √36 : 3 + 3 . 18] -66}=
26+{[ 20 - 6 : 3 + 3 . 18] -66}=
26+{[ 20 - 3 + 54] -66}=
26+{ 37 - 66}=
26 + {-29}=
- 3