Question

Resolva as expressoes : A) -2+3.5-12:6= B) 20-[-12+(6_15)]= C) -16:(-1+3.3)+3.4= D) 2*2.(-3)*1+(-5)*2.7*0= E) 1+{-2+[3+(-4+5)]+7}=

Answer 1

A) -2+3.5-12:6
-2+15-2
=11

B) 20-[12+(6-15]
20-[12+9]
20-21
=-1

C) -16:(-1+3.3)+3.4
-16:(-1+9)+12
16:-8+12
16:4
=4

D)2^2. (-3)^1+(-5)^2.7^0
4.-3+(-10).0
-12-10.0
22.0
=0

E)1+{-2+[3+(-4+5)]+7}
1-2+3+(1)+7
=10