A1=5,d=2
a16=a1+15d
a16=5+15*2=5+30=35
2. 0.6*4/3=0,8
6/10*4/3=4/5
4/5=0.8
0,9х-0,6х+1,8=0,4х-2,6
0,3х+1,8=0,4х-2,6
0,3х-0,4х= -2,6-1,8
-0,1х= -4,4
0,1х=4,4
х=44
<span>4-</span>⁸<span>*(4*4</span>²<span>)</span>³<span>/(5*4)=4</span>³*4⁶/(4⁸*5*4)=4⁹/(4⁹*5)=1/5=0,2.
Ответ: 0,2.
Х=4-у
4-у-4у=3
4-5у=3
5у=4-3
5у=1
у=1/5
х=4-1/5=20/5-1/5=19/5=3 4/5
(3 4/5; 1/5)