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2. (2.4a-1.6b):0.8=2.4a-1.6b:0.8=3a-2b
3. (4u-6v):(-0.5)=4u-6v:-0.5=--8u+12v
1. 6x-2
*3=18x-6
:3=2x-2/3
+3=6x+1
-3=6x-5
-2=6x-4
+2=6x
*2=12x-4
:(-2)=-3x+1