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6x-10-9x+15=0
-3x=-15+10
-3x=-5
x=5/3
Spr.
(3x-5)2-3(3x-5)=(3*5/3-5)*2-3(3*5/3-5)=0*2-3*0=0
pozdrawiam:)
6x-10-9x+15=0
6x-9x=10-15
-3x=-5
x=1⅔