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

A) 14-(-10+5+3)
14+10+5+3
24+5+3
29+3
= 32
B) -15+[-4(-5+20)]
-15-4-5+20
+19-5+20
+14+20
=34
C) 20-{-10+[+20-(-20+10)]}
20+10+20+20+10
30+20+20+10
50+20+10
70+10=
80
D) -12+(-6)-(-8-5)
-12-6+8-5
18+8-5
26-5
21