Question

Oblicz.

a) 3 1/4 + 5 1/3 * 4 3/4=

b)1 1/7 * 1 3/4- 5 3/5 * 10/56=

c) 5 1/2* 1 3/4- 2 3/4* 3 1/2=

d)5,5*2 1/2*2,5*2 1/2=

Answer 1

a) 3 1/4 + 5 1/3 * 4 3/4=3 1/4+16/3*19/4=3 1/4+ 76/3=13/4+76/3=39/12+304/12=343/12=28 7/12

b)1 1/7 * 1 3/4- 5 3/5 * 10/56=8/7*7/4-28/5*10/56=2-1=1

c) 5 1/2* 1 3/4- 2 3/4* 3 1/2=11/2*7/3-11/4*7/2=77/6-77/8=616/48-462/48=154/48=77/24

d)5,5*2 1/2*2,5*2 1/2=55/10*5/2*25/10*5/2=55/4*25/4=1375/16=85 15/16