(5 1/7 + 1/3) * 7/23
a = ---------------------------- =
(4,5 - 1/3 ) : 3 1/2
(0,45 - 9/40) - 111 1/9
b = ----------------------------- =
12 5/8 : (2 2/5 + 1/8 )
Obliczyć, napisać krok po kroku co się z czego bierze, można w pliku :)
DAM NAJ : )
mała legenda
coś / coś -- ułamek
------------ - kreska ułamkowa (długa)
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(5 3/21+ 7/21)*7/23
---------------------------
12 5/8:(2 16/40 + 5/40)
5 10/21 *7/23
------------------
12 5/8: 2 21/40
115/21*7/23
-----------------
101/8*40/101
5/3 : 5=5/3*1/5=1/3
a)
(5 1/7 + 1/3 ) * 7/23 (35/7 + 1/3 ) *7/23
--------------------------- = -------------------------------------- =
(4,5 - 1/3) : 3 1/2 9/2 - 1/3) :7/2
( 105/21 + 7/21) * 7/23 112/21[21 skróć na 3] * 7/23[7 na 1]
= ------------------------------- = ------------------------------------------------ =
( 27/6 - 2/6 :7/2 25/6[ 6 na 3] * 2/7 [2 na 1]
112/69
= ---------------- = 112/69 : 25/21 = 112/69 [69 na 23] * 2/25 [21 na 7] =
25/21
= 784/575 = 1 209/575
b)
(0,45-9/40)-111 1/9 ( 9/20 - 9/40 ) - 1000/9
--------------------------- = ------------------------------------- =
12 5/8 : ( 2 2/5 + 1/8) 101/8 : (12/5 + 1/8)
(18/40 - 9/40) - 1000/9 9/40- 1000/9 81/360 - 4000/360
= -------------------------------------- = ----------------------- = ------------------------ =
101/8: ( 96/40+ 5/40) 101/8 : 101/40 101/8[101 na 1 i 8 na 1]
* 40/101[40 na 5 a 101 na 1]
-39919/360
= ------------ = - 39919 * 1/5 = - 39919/1800 = - 22 319/1800
5/1
Jak masz jakieś odpowiedzi do tego zadania to sprawdź !!!
Ale powinno być dobrze