10х-24х+13х-х=5-7
-2х=-2
х=1
Ctgt/ctgt = 1; 1 + sint = 1 + cost; t сокращаются -> sint = cost; t = sqrt(2)/2
<span>(10100+90900):100:5*4+101*2 = 1010
1) </span>10100+90900 = 101000
2) 101000:100 = 1010
3) 1010:5 = 202
4) 202*4 = 808
5) 101*2 = 202
6) 808+202 = 1010