1)a) 6x-4x-10=3x-8
6x-4x-3x=-8+10
-x=2
x=-2
б) 2-3х-15=8х-24
-3х-8х=-24-2+15
-11х=11
х=-1
в) 2(х+1)+5(х-2)-60
----------------------- =0
10
2х+2+5х-10-60
-------------------- =0
10
7х-68
-------- =0
10
2)а) 3^7*3^8 3^15
----------- = -------
3^12 3^12
б)7^5*7^12 7^17
------------ = --------
7^14 7^14
в)5^3*5^4 5^7
----------- = -----
(5^2)^2 5^4