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rezolvați eucuatia .4(7+5×)=248+2×

Răspuns :

28+20x=248+2x => 18x=-220 =>x=220/18
4*(7+5x)=248+2x
28+20x=248+2x
248-28=20x-2x
220=18x
18x=220
x=220/18
x=110/9