Question

(1/7)+(-3/9)=(9/63)+(-21/63)=
(-2/3)+(-1/4)=(-8/12)+(-3/12)=
(-1/2)+(-2/11)=(-11/12)+(-4/11)=
(4/7)+(-1/5)=
(-7/8)+(-1/3)=
(5/6)+(-1/2)=​

Answer 1

Comenzamos

(1/7)+(-3/9)=(9/63)+(-21/63)= -4/21

-2/3)+(-1/4)=(-8/12)+(-3/12)= -11/12

(-1/2)+(-2/11)=(-11/12)+(-4/11)= -169/132

(4/7)+(-1/5)= 13/35

(-7/8)+(-1/3)= -29/24

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

Espero haberte ayudado ☺️ bendiciones