31分之14×13+31分之17×13+23简便计算
急急急
推荐回答（3个）
原式=13（14/31+17/31）+23
=13×1+23
=13+23
=36
31分之14×13+31分之17×13+23
=31分之13×14+31分之13×17+23
=31分之13×（14+17）+23
=31分之11×31+23
=11+23
=34
14/31 X 13 + 17/31 X 13 + 23
= 13 X 14/31 + 17/31 X 13 + 23
= 13 X (14 + 17) / 31 + 23
= 13 X 31/31 + 23
= 13 + 23
= 36
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