Question

b) 12+{[(3-3)+7]+4}
c) [(4+3)-7]+2
d) {[(7+4)+7]-4}+3
e)[(2+3)+6]-10
f){[(31+2)+5]-7}

Answer 1

Resposta:

a)12+{[(3-3)+7]+4}

12+{[7]+4}

12+{7+4}

12+11

23

b)[(4+3)-7]+2

[7-7]+2

0+2

2

c){[(7+4)+7]-4}+3

{[11+7]-4}+3

{18-4}+3

14+3

17

d)[(2+3)+6]-10

[5+6]-10

11-10

1

e){[(31+2)+5]-7}

{[33+5]-7}

{38-7}

31