Răspuns:
2. 360⁰ - ( 80⁰ + 65⁰ + 100⁰ )=
360⁰- 245⁰=
115⁰
3. a) a = 13+ 5
a = 18
b) x =27:3
x=9
c) x= 6×4
x =24
4. a+ 22= 70
a= 70-22
a = 48
