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Help!!!-Plz vreau si rezolvarea,dau coroana:)))Ex.:2,3,4,5!

HelpPlz Vreau Si Rezolvareadau CoroanaEx2345 class=

Răspuns :

2. 2x-5=3 |+3
2x=8 |:2
x=4 [B]
3. 3-x/6-x=2/3
3-x/6-6x/6=-4/6 |•6
3-x-6x=-4
5x=-1 |:5
x=-1
4. [D]
5. |-2/3|+|+2/3|+|0|-|-1|-|+3|=
=2/3+2/3+0-1-3=
=4/3-1-3
=4/3-3/3-9/3
=-8/3 [B]