九又五分之四乘以一又三分之一加二又五分之一除以四分之三减一又三分之一乘以二
=9.8×(4/3)+2.2÷0.75-(4/3)×2
=9.8×(4/3)+2.2×(4/3)-(4/3)×2
=(4/3)×(7.8+2.2)
=(4/3)×10
=40/3