Предмет: Математика, автор: geimer456

помогите пж ПОМОГИТЕ ПЖПЖПЖПЖ

Приложения:

Ответы

Автор ответа: dyjsenali2007

0

Ответ:

1. X=260

2.y= 18

3.X=157

geimer456: спс

Автор ответа: kenesovamir5

1

Ответ:

1)20×(х+11)=5420

х+11=5420:20

х+11=271

х=271-11

х=260

П:20×(260+11)=5420

5420=5420

2)(68-y):5=10

68-y=10×5

68-y=50

y=68-50

y=18

П:(68-18):5=10

10=10

Номер 3 решить не смог.

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