Question

646-(146+357)=646-146-?=, (738+645)-383=(783-?)+645=, ​

Answer 1

Ответ:

646-146-357=143

(738+645)-383=(783-383)+645=1045

Answer 2

Let's solve these equations step by step:

1. $646 - (146 + 357) = 646 - 503 = 143$
2. $(738 + 645) - 383 = 1383 - 383 = 1000$
3. $(783 - ?) + 645 = 1000$ => $783 - ? = 1000 - 645 = 355$ => $783 - 355 = 428$

So, the solutions are:

1. $646 - (146 + 357) = 143$
2. $(738 + 645) - 383 = 1000$
3. $783 - ? = 428$ => $? = 783 - 428 = 355$