Докажите тождество: 1) (200xy - 55x'y?) : (5xy?) + 11 = 40xy;
2) 1,1а- (12,1a3b2 – 44a*b*): (11a*b*) = 4;
3) 1,6s't: (0,04s't) - 41,22s = -1,22s;
4) (8,47n'm' + 77n'm'): (7,7n'm') - 10 = 1,1пт.​

Danila43pirojok    2   21.10.2020 06:50    2