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12x+6-30x+10=14x-2-20x-10

Răspuns :

[tex]12x+6-30x+10=14x-2-20x-10 \\ -18x+16=-6x-12 \\ -18x+6x=-12-16 \\ -12x=-28 |*(-1) \\ 12x=28 \\ x= \frac{28}{12}= \frac{7}{3} [/tex]
CosmoteRo
-18x+16=-6x-12
-18x+6x=-12-16
-12x=-28
x=28:12
x=2,(3)