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Ответ

Ответ дан
ArinaPa75

Відповідь:

Покрокове пояснення:

370+12:4+7=380

1)   12:4=3

2) 370+3=373

3)373+7=380

(68-50):3+506=512

1)68-50=18

2)18:3=6

3)6+506=512

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