tolong besok dikumpulkan ploss beeserta caranya

5). 13 1/4 + 10 1/6 - 15 2/3
= ( 13 + 10 - 15 ) + ( 1/4 + 1/6 - 2/3 )
= 8 + ( 5/12 - 8/ 12 )
= 7 + ( 17/12- 8/12 )
= 7 + 9/12
= 7 9/12 = 7 3/4


6.) 4 1/2 : 3/5
= 4 1/2 x 5/3
= 9/2 x 5/3
= 3/2 x 5/1
= 15/2 = 7 1/2


7.) 3n = 81
n = 81 : 3
B = 27



Bisa itu aja.. Maaf kalo salah