Решение с дробями 1)14 4/9 - 8 7/24-3 5/8=...........2)15 4/5 + 3 3/4 -9...

Question

Решение с дробями 1)14 4/9 - 8 7/24-3 5/8=...........2)15 4/5 + 3 3/4 -9 7/10=...............3)21 2/5-8 9/20-7 3/4 +15 17/60=...........4)7 2/3 + 4 5/16 - 8 7/25 - 2 3/8=

Answer 1

1) 130/9 - 199/24 = 1040/72 - 597/72 = 443/72 = 6 11/72

2) 79/5 + 15/4 - 97/10 = 316/20 + 75/20 - 194/20 = 147/20 = 7 7/20

3) 107/5 - 169/20 - 31/4 + 917/60 = 1284/60 - 507/60 - 465/60 + 917/60 = 1229/60 = 20 29/60

4) 23/3 + 69/16 - 207/25 - 19/8 = 73600/9600 + 41400/9600 - 79488/9600 - 1459200/9600 = - 1423688/9600 = - 148 361/1200