2*(3х+1)=-3
6х+2=-3
6х=-3-2
6х=-5
х=-5/6
Ответ:-5/6.3вариант
<span>3 5/3 = 3+1 2/3 = 4 1/3</span>
<span> 17 18/5 = 17+3 3/5 = 20 3/5</span>
<span>9 17/4 = 9+4 1/4 = 10 1/4</span>