(3а - 1)((1 1/5 + 1/3) : 4 3/5) + 1/3 < 7( 2 - 4 1/2 : 2 1/10)a =
= (3a - 1) (23/15 : 23/5) + 1/3 < 7(2 - 2 1/7)a =
= (3a - 1) * 1/3 + 1/3 < 7(-1/7)a =
= a - 1/3 + 1/3 < - 1a =<u> a < - a</u>
524/917 (на 2) !!!!!!!!!!
<span>Тридцать первое (число месяца).</span>
5404,61329 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
25х+360=13х
25х-13х=-360
12х=-360
х=-360:12
х= -30
Ответ: х=-30