Question 78
$$(- 12)[11 + \left\{ 7 \times (- 3)\right\} ] \div [4 \left\{ 13 - (- 3) \times (- 6)\right\}] =$$
Solution
$$(- 12)[11 + \left\{ 7 \times (- 3)\right\} ] \div [4 \left\{ 13 - (- 3) \times (- 6)\right\}]$$
First solve small bracket as per BODMAS rule.
$$-12[11 + \left\{-21\right\} ] \div [4 \left\{ 13 - 18\right\}]$$
Solve curly bracket as per BODMAS rule.
$$-12[11 -21] \div [4 \times(-5)]$$
Now solve big bracket as per BODMAS rule.
$$120 \div (-20)$$
-6
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