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3(2× - 1)=23-7×
4(3×-5)=2×+10




va rog ajutor ...


Răspuns :

6x-3=23-7x 6x+7x=23+3 13x=26 X=26:13 X=2 12x-20=2x+10 12x-2x=10+20 10x=30 X=30:10 X=3