1. a²b<0
2. ab²>0
+² * - = -
+ * -² = +
14х=70
х=70:14
х=5...'.'.......
<span><em>-15</em><span /><span /><em>/32+0,7= - 15/32+ 7/10= - 150/320+ 224/320=74/320=37/160</em>
</span>
0,6*k*0,2 = 0,48
0,12k = 0,48
k =4
14-х =2ц7/15
-х = 2ц7/15-14
-х=-11ц8/15
х =11ц8/15
37+х =9ц6/7
х =9ц6/7 -37
х = -27ц1/7
<span>10*10*10=1000ед. куб</span>