Question

9) O valor de
-10 - [12 + 13 - 4.(+5) - 3.4 - 5] + 1 é?​

Answer 1

(-10)-[12+13-4.5-3.4-5]+1

(-10)-[12+13-20-12-5]+1

(-10)-[25-20-12-5]+1

(-10)-[5-12-5]+1

(-10)-[(-7)-5]+1

(-10)-(-12)+1

2+1

3