Question

elimine os parenteses e calcule : 4 + ( 3+ 5 - 20 ) + ( 3 - 10 ) =

Answer 1

4 + ( 3 + 5 - 20 ) + ( 3 - 10 )4 + 3+ 5 - 20 + 3 - 107 - 15 - 7
- 15

Answer 2

4+(3+5-20)+(3-10)=
4+(-12)+(-7)
4-12-7
4-19
-15