1) 23/6-7/6=16/6=8/3=2ц2/3
2)79/9-47/9=32/9=3ц5/9
3)119/11-46/11=73/11=6ц7/11
4)23/3-2/3=21/3=7
5)37/8-3=37-24/8=13/8=1ц5/8
6)91/9-4=91-36/9=55/9=6ц1/9
7)59/9-5/9=54/9=6
8)3-7/4=12-7/4=5/4=1,25
-4k + 2(3m - 0,5(6n - 8k)) - (7k - 3(k - 2(m - n))) + 2(4m + 2n - 3(2m + k)) =
= -4k + 2(3m - 3n + 4k) - (7k - 3(k - 2m + 2n)) + 2(4m + 2n - 6m - 3k) =
= -4k + 6m - 6n + 8k - (7k - 3k + 6m - 6n) + 8m + 4n - 12m - 6k =
= <u>-4k</u> + 6m - 6n + <u>8k</u> - <u>7k</u> + <u>3k</u> - 6m + 6n + 8m + 4n - 12m - <u>6k</u> =
= -6k - 4m + 4n
<h2> <u>7</u> <u> 1 </u> <u>16</u> <u>43 </u> </h2><h2><em> 3 9 -- 2 21 = 3 -- 21 = </em></h2><h2><u><em /></u></h2><h2><u><em>112-43 </em></u><em> </em><u>69</u> <u>23</u> <u>2</u></h2><h2>21 = 21 = 7 = 3 7</h2><h2 />
359х2= 718 потом 905 - 718=187
198х4=792 потом 801-792=9
135х5=675 потом 703-675=28