Tolong y dibantu pliss

11) (5+3) + 1/4 = 8 1/4

12) (5-2) + (3/5 - 1/4)
= (3) + (12/20 - 5/20)
= 3 + 7/20 = 3 7/20

13) 2 2/6 × 2 4/10
= 14/6 × 24/10
= 7/3 × 12/5
= 84/15 = 5 9/15 = 5 3/5

14) 1 6/9 ÷ 3 2/6
= 15/9 ÷ 20/6
= 5/3 ÷ 10/3
= 5/3 x 3/10
= 15/30 = 1/2





Maaf kalau salah dan gak jelas

No.11 5 1/4+3=21/4+3/1=21/4+12/4=
33/4=8 1/4
No.12 5 3/5-2 1/4=5 12/20-2 5/20=
3 7/20
No.13 2 2/6×2 4/10=14/6×24/10=28/5
=5 3/5
No.14 1 6/9:3 2/6=15/9:20/6=
15/9×6/20=6/12=1/2