<span>log(0.6, 10) - log(0.6, 6) = log(0.6, 10/6) = log(6/10, 10/6) = -1
По короче:
</span>log ( 10/6 ) по основанию 0.6 = -1
1) 1/15-1/16=16/240-15/240=1/240;
2) 1/16-1/17=17/272-16/272=1/272;
3) 1/17=1/18=18/306-17/306=1/306;
4) 1/18-1/9=1/18-2/18=-1/18;
5) 1/240:1/272=1 целая 2/15;
6) 1 целая 2/15*1/306=1/270;
7) 1/270:-1/18=-1/15;
1
3:x=25+20
3:x=45
x=3/45
x=1/15
2
x*10=60+90
x*10=150
x=150:10
x=15
3
x:10=100-76
x:10=24
x=24*10
x=240
4
3333*x=10000-1
3333*x=9999
x=9999:3333
x=3
5
4*x=32
x=32:4
x=8
6
6*x=60
x=60:6
x=10
7
20:x=4
x=20:4
x=5
8
x=3*15/3
x=15