Question

Oblicz

6,4x5/8

2/15x0,75

1 i 3/7x0,056

2,4:1 i 3/5

3 i 3/4:0.05

2 i 5/6:3,4

POMOCY !

Answer 1

6,4 × 5/8 = 6 i 4/10 × 5/8 = 64/10 × 5/8 = 8/2 × 1/1 = 8/2 = 4

2/15 × 0,75 = 2/15 × 75/100 = 1/1 × 5/50 = 5/50

1 i 3/7 × 0,056 = 1 i 3/7 × 56/1000 = 10/7 × 56/1000 = 1/1 × 8/100 = 8/100

2,4 : 1 i 3/5 = 2 i 4/10 : 1 i 3/5 = 24/10 × 5/8 = 3/2 × 1/1 = 3/2 = 1 i 1/2

3 i 3/4 : 0,05 = 3 i 3/4 : 5/100 = 15/4 × 100/5 = 3/1 × 25/1 = 75/1 = 75

2 i 5/6 : 3,4 = 2 i 5/6 : 3 i 4/10 = 17/6 × 10/34 = 17/3 × 5/34 = 85/102