四分之一×(4.85÷十八分之五—3.6+6.15×3又五分之三)+[5.5—1.75×(1又三分之二+二十一分之十九)]
=四分之一×(4.85×3.6—3.6+6.15×3.6)+[5.5—1.75×(5/3+19/21)]
=1/4×3.6×(4.85-1+6.15)+5.5-1.75×5/3-1.75×18/7
=0.9×10+5.5- 4.5
=9+1
=10
四分之一×(4.85÷十八分之五—3.6+6.15×3又五分之三)+[5.5—1.75×(1又三分之二+二十一分之十九)]
=四分之一×(4.85×3.6—3.6+6.15×3.6)+[5.5—1.75×(5/3+19/21)]
=1/4×3.6×(4.85-1+6.15)+5.5-1.75×5/3-1.75×18/7
=0.9×10+5.5- 4.5
=9+1
=10