Question

Simplify the following :
i) $4+[-9+\{\overline{7+3}-8-9\left\}\right]$
ii) $14[-24÷\{-8+2\}-3(-7+3\left)\right]$

Answer 1

(i) $4+[-9+\{7+3-8-9\left\}\right]$

$=4+[-9+\{10-8-9\left\}\right]$

$4+[-9+\{10-17\left\}\right]$

$=4+[-9+\{-7\left\}\right]$

$=4+[-9-7]$

$=4+[-16]$

$=4-16$

$=-12$

(ii) $14[-24÷\{-8+2\}-3(-7+3\left)\right]$

$14[-24÷\{-6\}-3(-4\left)\right]$

$14[-24÷-6+12]$

$14[4+12]$

$=14\left[16\right]$

$=224$