Предмет: Математика, автор: Mary7Reva

4х-21-3х=18 как решить

Ответы

Автор ответа: dostas50

Ответ:

x=39

Пошаговое объяснение:

4x-3x=18+21

x=39

Автор ответа: NataMon

Ответ:

х = 39

Пошаговое объяснение:

4х - 21 - 3х = 18

4х - 3х = 18 + 21

х = 39

Проверим:

4*39 - 21 - 3*39 = 18

156 - 21 - 117 = 18

18 = 18

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