111111 ? :) XD XD XD XD XD
3х+10у+7х-5у=10х+5у
6х-5у-3х+2у=3х-3у
(2х+2у)*2+(4х+4у)*2=4х+4у+8х+8у=12х+12у
88942-х при х=44761 88942-447621=44181
при х=17942 88942-17942=106884
(а+б)-674 приа=830 б=243 (830+243)-674=399
при а=1712 б=805 (1712+805)-674=1843
1) 19853х12730=252728690
2) 252728690+123980=252852670
3)234÷3=78
4)78×252852670=19722508260
5)345678:56