Предмет: Математика, автор: sofiamezej2

допоможіть плііііз
буду дуже вдячна​

Приложения:
ahatovaania56: ХЗ

Ответы

Автор ответа: Khodanovich1979
1

Відповідь:

Покрокове пояснення:

1) х+4+х=16

2х+4=16

2х=12

х=6см

2) х+3х=20

4х=20

х=5см

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