Question

PROSZE O ROZWIĄZANIE PILNE !!! * to mnożenie DAJE PUNKTY I NAJ :) UŁAMKI a 29/10-2/3*30/4 b 21*(1/6-1/8)-3(1/8-1/6) c 6-8/3-19/6+3/4 d 4,5*3 i1/2 -3:0,2 e 7/5-31/8-0,125 f 16/5:0,4 w mianowniku 3 :5/2-1/15 g [(7/8-2/5)-{11/40-25}]:{39/20+9/5 h 24/4:1/7-22 i w mianowniku 6-{-5}

Answer 1

a) 29/10-2/3*30/4= 29/10-5= -21/10= -2 1/10

b) 21*(1/6-1/8)-3(1/8-1/6)= 21*1/24-3*(-1/24)= 7/8+1/8= 1

c) 6-8/3-19/6+3/4= 10/3-47/12= -7/12

d) 4,5*3 i1/2 -3:0,2= 4,5*7/2-3:0,2= 9/2*7/2-3:0,2= 63/4-15= 3/4

e) 7/5-31/8-0,125= -99/40-0,125= -99/40-1/8= -13/5= -2 3/5

f) 16/5:0,4         16,5: 2/5       33/2*5/2   165/4

    -------------- =  ------------- = ----------- = --------= 165/4*15/17= 2475/68= 36 27/68

    3 :5/2-1/15     3*2/5-1/15  6/5-1/15    17/15

 

g) [(7/8-2/5)-{11/40-25}]:{39/20+9/5} = [(19/40+989/40):15/4]= 126/5*4/15= 168/25= 6 18/25

 

h) 24/4:1/7-22     24/4*7-22    42-22    20

    ---------------- =  ------------ =   ------- =  ---- = 1 9/11

    6-{-5}                    11                11         11