Question

a) {[ 2+4 ]-2} - 7 =
b) 2{3+1 [5-4 (3.2)]-8} =
c) - 2+{[6-10-4]}=
d) 2 x 2 + 1 - [5 - 4 (6 + 2)]-7} =

URGENTE!!!​

Answer 1

RESPOSTA:

A) { [2+4]-2}-7

{6-2}-7

4-7

-3

B)2{3+1[5-4(3.2)]-8}

2{3+1[5-4+6]-8}

2{3+1[1+6]-8}

2{3+1+7-8}

2{4+7-8}

2{11-8}

2+3

5

C)-2{[6-10-4]}

-2{[4-4]}

-2-0

0

D)2.2+1-[5-4(6+2)]-7}

2.2+1[5-4+8]-7}

2.2+1-[1+8]+7}

2.2+1-9+7

4+1-9+7

5-9+7

4+7

11