1)79/80-(3/16+39/80);
2)2/45+(41/45-7/9);
3(7/15-(2/15+1/5);
4)3/16+(15/16-5/8)
170
364
Ответы на вопрос:
1)79/80-(3*5/16*5+39/80)=
=79/80-(15+39)/80=
=(79-54)/80=25/80=5/16
2)2/45+(41*1/45*1-7*5/9*5)=
=2/45+41/45-35/45=
=8/45
3)7/15-(2*1/15+1*3/5*3)=
=7/15-(2+3)/15=
=(7-5)/15=2/15
4)3/16+(15*1/16*1-5*2/8*2)=
=3/16+(15-10)/16=(3+5)/16=
=8/16=1/2=0,5
=79/80-(15+39)/80=
=(79-54)/80=25/80=5/16
2)2/45+(41*1/45*1-7*5/9*5)=
=2/45+41/45-35/45=
=8/45
3)7/15-(2*1/15+1*3/5*3)=
=7/15-(2+3)/15=
=(7-5)/15=2/15
4)3/16+(15*1/16*1-5*2/8*2)=
=3/16+(15-10)/16=(3+5)/16=
=8/16=1/2=0,5
Популярно: Математика
-
Надюшка200011.08.2020 10:20
-
vasta555555529.12.2020 17:08
-
fvgfds18.05.2020 10:59
-
Houghin12.12.2020 13:36
-
ilyavarbanetsozotem04.02.2023 16:17
-
Angela96024.09.2022 16:16
-
Sayn128.07.2020 14:55
-
Кирюха5555522.05.2020 02:30
-
leg305.05.2021 00:36
-
guna325.04.2023 18:25