Question

find the sum: (a) 5/4+–11/4
(b)5/3+3/5
(c)–9/10+22/15​

Answer 1

Answer:

(a) -3/2

(b) 34/15

(c) 17/30

Step-by-step explanation:

(a) 5/4 + - 11/4

= 5/4 - 11/4 = -6/4 = -3/2

(b) 5/3 + 3/5

LCM = 15

5/3 = 5×5/3×5 = 25/15

3/5 = 3×3/5×3 = 9/15

Hence, 5/3 + 3/5 = 25/15+9/15 = 34/15

(c) LCM = 30

-9/10 = -27/30 (X3)

22/15 = 44/30(X2)

Hence, -9/10+22/15 = -27/30+44/30 = 17/30

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