Решите пример: 3 23/15 + 7,45 - 1 11/25 - 4 13/75 3 1/13 x ( 3/5 + 7/8) - 1 2/26. Created by ilonazelen. matematika-ru

26...

ilonazelen @ilonazelen

August 2022 1 6 Report

Решите пример:
3 23/15 + 7,45 - 1 11/25 - 4 13/75
3 1/13 x ( 3/5 + 7/8) - 1 2/26

Answers & Comments

TigerYa

Verified answer

3 23/15 + 7,45 - 1 11/25 - 4 13/75=

{3 23/15+ 7 9/20} - {1 11/25+ 4 13/75}=

{ 3 (23•4)/(15•4) + 7 (9•3)/(20•3)} - { 1 (11•3)/(25•3) + 4 13/75}=

{ 3 92/60+ 7 27/60} - { 1 33/75+ 4 13/75} =

10 119/60 - 5 46/75=

11 59/60 - 5 46/75=

11 (59•5)/(60•5) - 5 (46•4)/(75•4)=

11 295/300- 5 184/300=

6 111/300= 6 (111:3)/(300:3)=

6 37/100= 6,37

{7,45= 7 45/100= (7•100+45)/100= 745/100= (745:5)/(100:5)= 149/20= 7 9/20}

3 1/13 x ( 3/5 + 7/8) - 1 2/26=

(3•13+1)/13• 3/5+ (3•13+1)/13• 7/8 - 1 2/26=

40/13• 3/5+ 40/13• 7/8- 1 (2:2)/(26:2)=

8/13• 3/1+ 5/13• 7/1- 1 1/13=

{сократили 40 и 5 на 5; 40 и 8 на 8}

= 24/13+ 35/13- (13•1+1)/13=

59/13- 14/13= 45/13= 3 6/13

4 votes Thanks 5

Answers & Comments

Verified answer

rasskaz ozhizni egipetskogo velmozhi ot ego imeni dayu 10 ballov mogu 12

kak pravilno pishetsya how many children in the yard ili how many children are in

pomogite shkolnoe intervyu ne kasaetsya shkoly voprosy dlya uchenikov

opredilite ideyu ballady svetlana vasiliya zhukovskogo dayu 25 ballov srochno

tekst na nemeckom yazyke pogoda v shvejcarii kratko o shvejcarii uchim pogodu

chim same tobi spodobalas povist zahar berkut 20 ballov

zapishi slova vid yakih utvorilisya podani spiv riznokolornij vichnist prohodn

reshite hronologicheskuyu zadachu znamenituyu statuyu afrodity milosskoj kottoraya byl

napishite metallicheskij blesk sery i medi zapah sery i medi

pomogite proshusposoby izmereniya goroshiny krome linejki predlozhite svoi

рекомендуемые вопросы

Helpful Links

Helpful Social