Question

i) On simplifying
7+ [12 - {8 + 3 - (9 of 6 - 13 x 4 + 1)}],

Answer 1

Step-by-step explanation:

$7 + (12 - 5 - (9 \times 6 - 52 + 1))$

$= 7 + (7 - (54 - 52 + 1))$

$= 7 + (7 - (2 + 1) = 0$

$= 7 + (7 - 3)$

$= 7 + 4$

$= 11$