Question

括号5分之一乘以括号5分之3的负2分之1乘以括号25分之3的2分之1怎么算

Answer 1

(1/5)x[(3/5)x(-1/2)]x[(3/25)x(1/2)]
=(1/5)x(-3/10)x(3/50)
=-9/2500。