Question

九乘八分之五减四乘七分之三加三乘八分之九加11乘七分之三

Answer 1

9X5/8一4X3/7十3X9/8十数丛银11x3/7
=3X3X5/8+3X9/8+(11X3/7一4X3/7)
=3x3X(5/8十9/8)十3/郑敬7X(11一4)
=3x3x14/8十3
=9x14/8十3
=126/薯宴8十3
=15又3/4十3
=18又3/4

Answer 2

9×5/8-4×3/7+3×9/8+11×3/7
【用交换律答姿侍重新组合】
=(9×5/8+3×9/8)+(-4×3/7+11×3/7)
【前括号中册庆提取9/8，后括号中提取3/7】
=9/清吵8×8+3/7×7
【约分】
=9+3
=12