Question

Rozwiaz zadania z Obliczeniami!

(1 3/8 + 2 5/6) x 12=

1 1/3 x (3 + 2 x 3/4)=

6 1/6 : 1/6 - 2 1/4 : 2=

(4 1/6 - 3 5/7) : 19=

(1/3 + 2/5 + 1 4/15) : 7 1/2=

1 7/9 : 2 2/3 - 2/5 : 1 3/5=

Prosze! Daje naj! :) <3

Answer 1

(1 3/8 + 2 5/6)*12= (11/8+17/6)*12=(66/48+136/48)*12= 202*12=2424
1 1/3*(3+2*3/4)= 1 1/3*(3+1 1/2)=1 1/3*(4 1/2)=4/3*9/2=36/6=6
6 1/6:1/6-2 1/4:2=37/6:1/6-9/4:2=37/6*6-9/4*1/2=37-7/4=35 1/4
(4 1/6-3 5/7):19= (25/6-26/7):19= (175/42-156/42):19= 19/42:19= 19/42*1/19=19/798
(1/3 +2/5 + 1 4/15):7 1/2=(5/15+6/15+19/15):7 1/2=(30/15):7 1/2= 2:15/2=2*2/15=4/15
1 7/9:2 2/3-2/5:1 3/5=16/9:24/9-2/5:8/5=16/9*9/24-2/5*5/8=2/3-1/4=8/12-3/12=5/12

Answer 2

(1 3/8 + 2 5/6) x 12= (11/8 + 17/6) * 12/1 = (33/24 + 68/24) *12/1 = 101/24 * 12/1 = 50 i 1/2

1 1/3 x (3 + 2 x 3/4)= 4/3 * (3 + 3/2) = 4/3 * (3/1 + 3/2) = 4/3 * (6/2 + 3/2) = 4/3 * 9/2 = 6

6 1/6 : 1/6 - 2 1/4 : 2= 37/6 * 6/1 - 9/4 * 2/1 = 37/1 - 9/2 = 74/2 - 9/2 = 65/2 = 32 i 1/2

(4 1/6 - 3 5/7) : 19= (25/6 - 26/7) * 1/19 = (175/42 - 156/42) * 1/19 = 19/42 * 1/19 = 1/42

(1/3 + 2/5 + 1 4/15) : 7 1/2= (1/3 + 2/5 + 19/15) : 15/2 = (5/15 + 6/15 19/15) * 2/15 = 30/15 * 2/15 = 4/15

1 7/9 : 2 2/3 - 2/5 : 1 3/5= 16/9 : 8/3 - 2/5 : 8/5 = 16/9 * 3/8 - 2/5 * 5/8 = 2/3 - 1/4 = 8/12 - 3/12 = 5/12