TÌM XA,X X 15 + X X 13 = 560 X 45 B,X X 125 – X X 73 = 1196 C,(X + X...

246 : X + 34 : X = 5 360 : X – 126 : X = 6 2005 + X x 34 = 533758 x X – 934 = 6722 X : 1234 = 127 (dư 360) XX – 2X x 2 + 68 = 10014968 – X x 5 = 4968 (X+2) + (X+2) + (X+2) = 42 199 < X x 5 – 15< 201