Hitunglah hasil operasi pecahan berikut. a.(3/8+3/4)×(6/5:4/5) b.(2 2/3× 1 3/4) - (1 1/3×1,75) c.(7/10-1/5):(3/10+2/5) d.(8/9-1/3) × (6/7:6/14)

A. (3/8 + 3/4) × (6/5 ÷ 4/5)

(3×4/8×4 + 3×8/4×8) × (6/5 × 5/4)

(12/32 + 24/32) × (6×5/4×5)

36/32 × 30/20

36×30/32×20

1.080÷10/640÷10

108÷4/64÷4

27/16

Desimal = 1,69

Pecahan Campuran = 1 11/16


B. (2 2/3 × 1 3/4) - (1 1/3 × 1,75)

(8/3 × 7/4) - (4/3 × 175/100)

(8×7/3×4) - (4×175/3×100)

56/12 - 700/300

56×300/12×300 - 700×12/300×12

16.800/3.600 - 8.400/3.600

8.400÷100/3.600÷100

84÷6/36÷6

14÷2/6÷2

7/3

Desimal = 2,4

Pecahan Campuran = 2 1/3


C. (7/10 - 1/5) ÷ (3/10 + 2/5)

(7×5/10×5 - 1×10/5×10) ÷ (3×5/10×5 + 2×10/5×10)

(35/50 - 10/50) ÷ (15/50 + 20/50)

25/50 ÷ 35/50

25/50 × 50/35

25×50/50×35

1.250÷125/1.750÷125

10÷2/14÷2

5/7

Desimal = 0,71


D. (8/9 - 1/3) × (6/7 ÷ 6/14)

(8×3/9×3 - 1×9/3×9) × (6/7 × 14/6)

(24/27 - 9/27) × (6×14/7×6)

15/27 × 84/42

15×84/27×42

1.260÷6/1.134÷6

210÷7/189÷7

30÷3/27÷3

10/9

Pecahan campuran = 1 1/9

Desimal = 1,2