=5х-3.6-3х-4.6=2х-8.2
=50х-3.2-15х+4.8+3.2=35х+4.8
(-2x+6y)+(2x-9y)
-(2x-6y)+(2x-9y)
-2x(-6y-9y)
Ответ:
1/4
-1/27
-1
125/8
50^3
64/125
-1/64
-100/9
-8/9261
-4/9
10/23
-1/49