Question

(vii) -42 + [2 - 4{(-8) +3 - (9*7-1-13 * 3)}]
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Answer 1

Answer:

-42 + [2 - 4{(-8) +3 - (9*7-1-13 * 3)}]

-42+ [ 2 - 4 {(-8)+3-(63-1-39)}]

-42+ [ 2- 4 {(-8)+ 3-23)}]

-42 +[2-4 -28]

-42+[-2-28]

-42+(-30)

-42-30

= -72