Question

求5／9 × 79又16／17 + 50×1／9 +1／9 × 5／17=？的简便计算，谢谢！

Answer 1

九分之五×79又十七分之十六+五十×九分之一＋九分之一×十七分之五
=79×5/9 +5/9×16/17 +50×1/9 +1/9×5/17
=79×5/9 +10×5/9 +1/9×80/17 +1/9×5/17
=(79+10)×5/9+1/9×（80/17+5/17）
=(89)×5/9+1/9×85/17
=(89)×5/9+5/9
=(89+1)×5/9
=90×5/9
=50

Answer 2

5／9 × 79又16／17 + 50×1／9 +1／9 × 5／17
=5/9x79又16/17+10x5/9+1/17x5/9
=5/9x(79又16/17+10+1/17）
=5/9x90
=50。

Answer 3

求5／9 × 79又16／17 + 50×1／9 +1／9 × 5／17=？的简便计算，
5／9 × 79又16／17 + 50×1／9 +1／9 × 5／17
=5/9x79又16/17+10x5/9+1/17x5/9
=5/9x(79又16/17+10+1/17）
=5/9x90
=50.