Question

Tolong ya pilisssss no 3 yg a smpk e aja terima kasih...

Answer 1

3. A. 2/15 - 1/2 + 3/10

2×2×10/15×2×10 - 1×15×10/2×15×10 + 3×2×15/10×2×15

40/300 - 150/300 + 90/300

-20÷10/300÷10

-2÷2/30÷2

-1/15


B. 3/7 + 4/21 - 13/14

3×21×14/7×21×14 + 4×7×14/21×7×14 - 13×21×7/14×21×7

882/2.058 + 392/2.058 - 1.911/2.058

-637÷7/2.058÷7

-91÷7/294÷7

-13/42


C. 4 2/5 - 1 1/3 + 2 3/4

(5×4+2) - (3×1+1) + (4×2+3)

22/5 - 4/3 + 11/4

22×3×4/5×3×4 - 4×5×4/3×5×4 + 11×3×5/4×3×5

264/60 - 80/60 + 165/60

349/60


D. 10 1/4 + 1 2/3 + 20 7/8

(4×10+1) + (3×1+2) + (8×20+7)

41/4 + 5/3 + 167/8

41×3×8/4×3×8 + 5×4×8/3×4×8 + 167×3×4/8×3×4

984/96 + 160/96 + 2.004/96

3.148÷4/96÷4

787/24


E. 2,25 + 25% + 1 1/2

225/100 + 25/100 + 3/2

225×100×2/100×100×2 + 25×100×2/100×100×2 + 3×100×100/2×100×100

45.000/20.000 + 5.000/20.000 + 30.000/20.000

80.000÷10.000/20.000÷10.000

8÷2/2÷2

4/1 = 4