Question

Resolva as seguintes expressões:

A) 14-(-10+5+3)
B) -15+[-4-(5+20)]
C) 20- {-10+[+20-(-20+10)]}
D) -12+(6)-(-8-5)

Answer 1

• Vamos aos cálculos •

A) 14-(-10+5+3)

14-(-2)

14 + 2

16 ✓

B) -15+[-4-(5+20)]

-15 +[-4-25]

-15 -29

-44 ✓

C) 20- {-10+[+20-(-20+10)]}

20 - { -10 +[ 20 +10]}

20- { -10 + 30 }

20 - 20

0 ✓

D) -12+(6)-(-8-5)

-12 + 6 + 13

-6 + 13

7 ✓