tolong ya capek mohon dibantu#pakecara

1) 3 3/8 + 1/4 + 7/10 = 27/8 + 1/4 + 7/10 = 135/40 + 10/40 + 28/40 = 173/40 = 4 13/40

2) 7 5/6 - 4 2/9 - 1/4 = 47/6 - 38/9 - 1/4 = 282/36 - 152/36 - 9/36 = 121/36 = 3 13/36

3) 4 1/2 : 1 3/4 x 7/9 = 9/2 : 7/4 x 7/9 = 9/2 x 4/7 x 7/9 = 252/126 = 2

4) 35% x 0,8 x 2 3/4 = 35/100 x 8/10 x 11/4 = 3.080/4.000 = 0,77

5) [kayaknya nanyain skala] skala = 10cm : 25km = 10 : 2.500.000 = 1 : 250.000