(2^95 * 3^55) / 6^45 =
= (2^50*2^45 * 3^45*3^10) / 6^45 =
= (6^45 * 2^50 * 3^10) / 6^45 =
= 2^50 * 3^10
1/14=01,14<u /><u><em /><em /> Помоему так.</u><u />
14Ц15кг. 1ц=100кг.А так хз.
1.
-4(0,6х - 3,5у) + 0,8(3х - 9,7)= -2,4х + 14у + 2,4х - 7,76у= 14у - 7,76у= 6,24у
у=25/78
6,24 * 25/78=6 6/25 * 25/78= 156/25 * 25/78=2
4.
14 - 13,5(4 1/15 - 2 7/9)= 14 - 13 1/2(4 1/15 - 2 7/9)= 14 - 27/2(61/15 - 25/9)=
=14 - 549/10 + 75/2= 14- 54,9 + 37,5= -40,9 + 37,5= - 3,4