口算．37+27=1-56=49-13=2-59=23-16=13+14=14-15=0.2+15=

Question

口算． (3)/(7)+(2)/(7)=	1-(5)/(6)=	(4)/(9)-(1)/(3)=	2-(5)/(9)=
(2)/(3)-(1)/(6)=	(1)/(3)+(1)/(4)=	(1)/(4)-(1)/(5)=	0.2+(1)/(5)=

Answer 1

(3)/(7)+(2)/(7)=(5)/(7)	1-(5)/(6)=(1)/(6)	(4)/(9)-(1)/(3)=(1)/(9)	2-(5)/(9)=1(4)/(9)
(2)/(3)-(1)/(6)=(1)/(2)	(1)/(3)+(1)/(4)=(7)/(12)	(1)/(4)-(1)/(5)=(1)/(20)	0.2+(1)/(5)=0.4