Question

九分之五乘以六分之五加九分之四除以五分之六

九分之五乘以六分之五加九分之四除以五分之六｛要算式｝

Answer 1

解：原式=5/9x5/6+4/9x5/6 =（5/9+4/9）x5/6 =1x5/6 =5/6

Answer 2

5/9×5/6+4/9÷6/5=5/9×5/6+4/9×5/6=（5/9+4/9）×5/6=1×5/6=5/6

Answer 3

5/9*5/6+4/9/（6/5）=5/9*5/6+4/9*5/6=5/6*（5/9+4/9）=5/6*1=5/6