Question

2) Resolva as expressões.
a) 7 − (3 − 1) =
b) (12 − 5) + 4 =
c) 10 − (7 + 1) =
d) 11 + 3 − (2 + 5) =
e) (20 − 1) + (13 − 3) =

f) (3 + 5) − (12 − 4) =
g) 1 + [3 + (4 − 1)] =
h) 7 + [12 + (3 + 10) − 20] =
i) 3 − [5 − (1 + 2)] =
j) 5 + {10 − [8 − (4 + 3)]} =

Answer 1

A) 7-2=5
B) 7+4=11
C) 10-8=2
D) 14-7=7
E) 19+10=29
F) 8-8=0
G) 1+[3+3] => 1+6=7
H) 7+[12+13-20] => 7+5=12
I) 3-[5-3] => 3-2=1
J) 5+{10-[8-7]} => 5+9 = 14