Question

(-3/5)+(-2/5)=? (+1/5)+(-4/5)=? (-3/8)-1/2=? 1/6-(-2/3 )=? (+21/5)+(-4/5)=? 0.5+(-3/4)+(5.25)+(1/2)

(+21/5)+(-4/5)=? 的意思是正二又五分之一减负五分之四的和是多少。

Answer 1

(-3/5)+(-2/5)=-1
(+1/5)+(-4/5)=-3/5
(-3/8)-1/2=-7/8
1/6-(-2/3)=5/6
(+21/5)+(-4/5)=17/5
0.5+(-3/4)=1/2+(-3/4)=-1/4
(5.25)+(1/2)=21/4+(1/2)=23/4