Question

Agora
1) Resolva as Expressões numéricas:
a) 2 + 8 - 3-5 + 15 =
b) 12 + [35 - (10 + 2) +2] =
c) [(18+ 3. 2) + 8 + 5 3] + 6 =
d) 37 +(-25 - (-11 + 19 - 4)] =
e) 60 + {2-[-7 + 18 + (-3 + 12)]} - [7 (-3) - 18 + (-2) + 1] =
f) -8 +{-5 + [(8 - 12) + (13 + 12)] - 10} =
g) 3- {2 + (11 - 15) -- [5 + (-3 + 1)] + 8) =
h) (-1 + (22-5.6)] + (-5 + 2) + 1 =
i) - (24-8). 2-24] + [22-(-3 + 2)2 =
1) {[(8.4 + 3) + 7 + (3 + 15 + 5) 3] 2-(19 - 7) + 6} 2 + 12 =
k) 45 -- {4.[(9.12 - 14.7):( 15 -5.2 )]}=
1 20:4 +3.2 - 15:3=
m) [ 25 - (18: 3 )] {5 -[ 18 -(4.5-4 )]}=
n) { 38 + [( 143 : 11 + 7) -5.2]}: 6 ​

Answer 1

Resposta:

2a+5a-3a=7a³ -3a 28a. a