Exercise 3.9
1. Simplify the following numerical expressions.
(a) 80 – {16 + (7 - 2 - 1)
(b) [135 = {23 – 2 (8 – 6 – 2)}]
(C) [{(40 - 10-6=4} * 7+3)
(d) [40 = {19–3 (6-4-1)}]
(e) 24 + {(6 - 3-1) + 5) = 3 of 2 - 3 7
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Answer:
7 + [ 2 - {(-8)+ 3 + (9 × 6+1 -13 × 3)}]
=> -7 + [ 2 -{(-8)+ 3 + (54 + 1 - 39)}]
=> -7 + [ 2 - {( -8) + 3 + (55-39)}]
=> -7 +[ 2 - {(-8) + 3 + 16)}]
=> -7 +[ 2 - ( -8 + 19)]
=> -7 +{2 - (11)}
=> -7 -( 2 - 11)
=> -7 + (-9)
Step-by-step explanation:
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