171,717,771 и 117(наверно)
1)
936 : 8 + (157 - 67) : 6 * 7 = 222
1) 157 - 67 = 90
2) 936 : 8 = 117
3) 90 : 6 = 15
4) 15 * 7 = 105
5) 117 + 105 = 222
2)
320 * 3 = 960
126 + 169 = 295
960 - 295 = 665
504 : 4 = 126
Выражение:
320 * 3 - (504 : 4 + 169) = 665
(x+20):5=6
X+20=6*5
X+20=30
X=30-20
X=10
2400:(c-12)=10
C-12=2400:10
C-12=240
C=240+12
C=252
А=280; 20-280:70=20-4=16
а=350; 20-350:70=20-5=15
а=490; 20-490:70=20-7=13
а=770; 20-770:70=20-11=9