25 – 1/2{5 + 4 – (3 + 2 – 1 + 3)}
24
21
6
16
Explanation:
25 – 1/2{5 + 4 – (3 + 2 – 1 + 3)}
= 25 – 1/2{5 + 4 – 7}
= 25 – 1/2*2
= 25 –1
= 24
25 – 1/2{5 + 4 – (3 + 2 – 1 + 3)}
25 – 1/2{5 + 4 – (3 + 2 – 1 + 3)}
= 25 – 1/2{5 + 4 – 7}
= 25 – 1/2*2
= 25 –1
= 24