Question

d) 3+ {4 * [2 + (6 + a) : 3] - 17} * 7 = 24​

Answer 1

Răspuns:

3+ {4 * [2 + (6 + a) : 3] - 17} * 7 = 24​

{4·[2+(6+a):3]-17}·7=24-3

4·[2+(6+a):3]-17=21:7

4·[2+(6+a):3]=3+17

2+(6+a):3=20:4

(6+a):3=5-2

6+a=3·3

a=9-6

a=3