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Stie cineva ex 10? Multumesc mult!

Stie Cineva Ex 10 Multumesc Mult class=

Răspuns :

a)x-2/5=2x-1/13=>(x-2)•13=(2x-1)•5=>13x-26=10x-5=>13x-10x=-5+26=>3x=21=>x=21/3=>x=7. b)2x+3/x+5=7/4=>4•(2x+3)=7•(x+5)=>8x+12=7x+35=>8x-7x=35-12=>x=23. c)4x-5/3=2x+8/2=>2•(4x-5)=3•(2x+8)=>8x-10=6x+24=>8x-6x=24+10=>2x=34=>x=34/2=>x=17. d)3x+11/9=x+6/4=>4•(3x+11)=9•(x+6)=>12x+44=9x+54=>12x-9x=54-44=>3x=10=>x=10/3. Succes!Coroană?!