Question

(56+14)-20
60-(20+13)
80+(12+5)
(30+70)-20

Answer 1

1)56+14-20=50
2)60-(20+13)=27
80+(12+5)=97
(30+70)-20=80

Answer 2

спасибо тебе Карина

Answer 3

(56+14)-20=70-20=50
60-(20+13)=60-33=27
80+(12+5)=80+17=97
(30+70)-20=100-20=80