Question

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Answer 1

Answer:

2. a) 63 ÷ (3+5) + 1

b) 3 × (16-4) - 2

c) 18 - 1/3(60+30)

d) 80 ÷ 4(2+3)

e) 9 × ( 3+4+5 )

Explanation:

1. a) -25 + 12 ÷ (9-3)

-25 +12 ÷ 6

-25 +2

= -23

b) 29-( 38-( 40 ÷ 2-( 6-9÷3)÷3))

29-( 38-( 40 ÷ 2-( 3)÷3))

29-( 38-( 20-1))

29- ( 38-19)

29-19

= 10

c) 14 - 1/2 ( 13+2- ( 7+5-2+3))

14 - 1/2 ( 13+2- ( 12-5))

14 - 1/2 ( 13+2- 7)

14 - 1/2 + 8

L.C.M = 14/1 - 1/2 + 8/1

28 - 1 + 16/2

= 33/2 OR 16.5

d)14 + 1/5 (( -10 ( 25 - 13 - 3)) ÷ (-5))

14 + 1/5 (( -10 ( 15 )) ÷ (-5))

14 + 1/5 (( -150 ) ÷ (-5))

14 + 1/5 × 30

L.C.M = 14 + 1 × 6

= 90

e) 27 - 1/4 ( -5 -(-48) ÷ (-16))

27 - 1/4 ( -5 +48 ÷ -16)

27 - 1/4 ( -5 +48 ÷ -16)

27 - 1/4 ( -5 +3 )

27 -1/4 -2

27 -1/2

L.C.M = 54-1/2

= 53/2 OR 26.5

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