1)10-10=0,
2)17+3=20
3)8-2=6
4)16+4=20
5)15+5=20
1)log(3)2>log(3)1⇒log(3)2>0
2)log(1/3)3=-1 -1<0⇒log(1/3)3<0
3)log(5)1/3<log(5)1⇒log(5)1/3<0
4)log(1/3)1/2>log(1/3)1⇒log(1/3)1/2>0
0.4^3*25^3=0.064*15625=1000
Х х 70 =2142000 х= 2142000 : 70 = 30300 х=30600
проверка 6 30600 х 70 = 2142000
2. 501502- х =3217
х= 501502 - 3217
х =498285 ПРОВЕРКА 498285+ 3217 =501502
49z-z=384
48z=384
z=8
102k-4k=1960
98k=1960
k=20