Question

(-7supra12)+(-5supra12) =
(+1supra2)+(-2supra3)=
(-3supra4)+(+1supra6)=
(-2supra5)+(3supra10)=
(-5supra6)+(+1supra2)=
(-5supra8)+(-3supra4)=
(-4supra7)+(+3supra14)=
(-5supra21)+(+9supra14)=
(+3supra6)+(+5supra6)=
(+1supra5)+(-3supra5)=
(-7supra11)+(3supra11)=
(-5supra17)+-7supra17)=
-7supra2+(-5supra4)=
(-4supra5)+(-1supra10)+(+5supra6)+(4supra15)=
(-1supra3)+(-1supra6)+(+5supra8)+(-7supra12)=

Answer 1

(-7/12)+(-5/12) =-12/12= -1

(+1/2)+(-2/3)= 3/6 - 4/6= -1/6

(-3/4)+(+1/6)= -9/12+2/12= -7/12

(-2/5)+(3/10)= -4/10+3/10= -1/10

(-5/6)+(+1/2)= -5/6 +3/6= -2/6= -1/3

(-5/8)+(-3/4)= -5/8 -6/8= -11/8

(-4/7)+(+3/14)= -8/14+3/14= -5/14

(-5/21)+(+9/14)= -10/42+ 27/42= 17/42

(+3/6)+(+5/6)= 8/6= 4/3

(+1/5)+(-3/5)=1/5 - 3/5= -2/5

(-7/11)+(3/11)=  -7/11+3/11= -4/11

(-5/17)+(-7/17)= -5/17-7/17= -12/17

-7/2+(-5/4)= -14/4 -5/4= -19/4

(-4/5)+(-1/10)+(+5/6)+(4/15)= -24/30-3/30+25/30+8/30= 6/30=1/5

(-1/3)+(-1/6)+(+5/8)+(-7/12)= -8/24 -4/24+15/24-14/24= - 11/24