Question

Resolva as expressões.
a)-9[-3+(-2+1)]
b)(-5+3)+[6-(3-10)]
c)(-2-3{4+[-8-(-9+2)]}
d)-1-{-2[-5+(15-3)]}

Answer 1

a)-9[-3+(-2+1]
-9[-3+(-1)]
-9-4
-13
b)(-5+3)+[6-(3-10)]
-2+[6-(-7)]
-2+13
11
c)(-2-3{4+[-8-(-9+2)]}
(-5{4+[-8-(-7)]}
(-5{4+[-1)]}
(-5{+3})
-2
d)-1-{-2[-5+(15-3)]}
-1-{-2[-5+12]}
-1-{-2+7}
-1-5
-6

:D