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Urgent!
Rezolvati ecuatia
-1=0,2x+3


Răspuns :

-1=0.2X+3⇒-0.2X=1+3⇒-0.2X=4⇒X=4/-0.2⇔X=-20
SUCEES


[tex]\it -1=0,2x + 3 \Leftrightarrow 0 = 0,2x + 3 +1 \Leftrightarrow 0 = 0,2x + 4 \Leftrightarrow \\\;\\ \Leftrightarrow \it 0,2x + 4 = 0\it \Leftrightarrow 0,2x = - 4|_{\cdot 10} \Leftrightarrow 2x=- 40\it \Leftrightarrow x = -20,\ S = \{-20\} [/tex]



[tex]\mathcal{S}\it ucces\ !!![/tex]