简算.9/25×17/26+13/25×7/26
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简算.9/25×17/26+13/25×7/26简算.9/25×17/26+13/25×7/26简算.9/25×17/26+13/25×7/269/25×17/26+13/25×7/26=1／25×1
简算.9/25×17/26+13/25×7/26
简算.9/25×17/26+13/25×7/26
简算.9/25×17/26+13/25×7/26
9/25×17/26+13/25×7/26
=1／25×1／26×（9×17＋13×7）
=1／25×1／26×（153＋91）
=1／25×1／26×244
=1／25×1／13×122
=122／325
只能这样最简了!
(9x26+17x25+13x26+7x25)/(25x26)=(22x26+24x25)/(25x26)=(11x26+12x25)/(25x13)
=586/325