Question

6.resolva as expressões
a)5+(3-1)=
b)(13-4)-8=
c)12-(7-3=
d)(20-3)+(2-5)]=
e)5-[3+(2-5)]=
f)3-[5-(4-6)]=
g)2-[8-(7-5)-1]=
h)-8+[4-(7-13)-1]+5=
i)1-[5+(1-9)]=
j)-13-[10(7+5)]=
k){5-[32-(30-20)]}=
l){16-[12+(20-25)]}=
m)10 - {30+[4 -(5+2)]}=
n)-2 -{5 -[3 -(-3 -1)]}=

Answer 1

Resposta:

a)  5+(3-1)

=5+2

=7

b)(13 - 4) - 8

9 - 8 = 1

c)12-(7-3=8