-9-12=
13-27=
-47-62=
-91+20=
-72+99=
БЫСТРЕЕ
ПЖ
Удачи

-9 - 12 = - ( 9 + 12 ) = -21.13 - 27 = - ( 27 - 13 ) = -14.-47 - 62 = - ( 47 + 62 ) = -109.-91 + 20 = - ( 91 - 20 ) = -71.-72 + 99 = 99 - 72 = 27.Удачи))))

-9-12= -2113-27= -14-47-62= -109-91+20= -71-72+99=27