Step by step explanation for all these questions first answer will be marked brainliest
Answers
1) (3/4 - 5/8) + 1/2
lcm of 4 and 8 = 8
3/4 ×2/2 = 6/8
(6/8 - 5/8) + 1/2
(6 -5) + 1/2
8
= 1/8 + 1/2
= 1 + 4
8
ans = 5/8
2) (a) -20/12 and 5/3
-20/12 = - 5/3
-5/3 is not equal to 5/3
The pair is not equivalent
(b) 16/-30 and -8/15
16/-30 = -8/15
-8/15 is equal to -8/15
The pair is equivalent
(c) -18/36 and -20/44
-18/36 = -1/2
-20/44 = - 5/11
-1/2 is not equal to -5/11
The pair is not equivalent
so the answer is (b)
(3) Lcm of 24, 18, 8, 32 is 96
-17/24 × 4/4 = -68/96
-13/16 × 6/6 = - 78/96
-7/8 × 12/12 = - 84/96
-31/32 × 3/3 = - -93/96
-68/96 > -78/96 > -84/96 > -93/96
-17/24 > -13/16 > -7/8 > -31/32
so -17/24 is the greatest
(4) 3/4 × (5/8 ÷ 1/2)
3/4 × (5/8 × 2)
3/4 × 10/8 = 15/16
as per the question the answer is 15/16
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