Matematika Tentukan nilai dari : 27 9 1 + 3 25 25 5 411 a. b. 2 3 x 1 1 4 + 25 C. d. X Tin No 1 1-2 1-+- 3 1|2 2 10 9 6 3 x 1 2 5 5 7 2. 27​

gregorialemkeulv – April 05, 2023

Tentukan nilai dari : 27 9 1 + 3 25 25 5 411 a. b. 2 3 x 1 1 4 + 25 C. d. X Tin No 1 1-2 1-+- 3 1|2 2 10 9 6 3 x 1 2 5 5 7 2. 27​

Pembahasan :

a. 1/3 + 27/25 : 9/5 = 1/3 + (27/25 × 5/9)

. = 1/3 + 3/5

. = 5/15 + 9/15

. = 14/15

b. 2 2/3 × (1 1/2 + 4/5) = 8/3 × (3/2 + 4/5)

. = 8/3 × (15/10 + 8/10)

. = 8/3 × 23/10

. = 4/3 × 23/5

. = 92/15

. = 6 2/15

c. 1/2 x 1 1/3 + 2/9 : 10/6 = (1/2 × 4/3) + (2/9 × 6/10)

. = 2/3 + (1/3 × 2/5)

. = 2/3 + 2/15

. = 10/15 + 2/15

. = 12/15

. = 4/5

d. 1 2/3 : 2 1/2 - 3/5 × 1 2/7 = (5/3 : 5/2) - (3/5 × 9/7)

. = (5/3 × 2/5) - (3/5 × 9/7)

. = 2/3 - 27/35

. = 70/105 - 81/105

. = -11/105