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Ecuatii:


2/3x+4/5=18/15


Răspuns :

2\3x+4\5=18/15 2/3x=18/15-4/5 (4/5 amplificam cu 3) 2/3x= 18/15-12/15 2/3x=6/15 X= 6/15 : 2/3 =6/15•3/2 . = 18/30(simplificam cu 6 ) . = 3/5