Предмет: Математика, автор: gulnara210478

решить уравнение двумя способами (12+х)-129=409

Ответы

Автор ответа: iriska124

1)(12+х)-129=409
12+х=409+129
12+х=538
х=538-12
х=526
2)(12+х)-129=409
12+х-129=409
х-117=409
х=409+117
х=526

Автор ответа: elektrik681Дока

12+х=409+129
12+х=538
х=538-12
х=526(первый способ)
2 способ:
12+х-129=409
х=409+129-12
х=526

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