Question

A)3-[5-(+4-6)]
B)-13-[10-(7+5)]
C){2+[3÷(+10-11)+1]+2}

Answer 1

A)3-[5-(+4-6)]
3-[5-(-2)]
3-[5+2]
3-[7]
3-7
-4

B)-13-[10-(7+5)]
-13-[10-(12)]
-13-[10-12]
-13-[-2]
-13+2
-11

C){2+[3÷(+10-11)+1]+2}
{2+[3÷(-1)+1]+2}
{2+[-3+1]+2}
{2+[-2]+2}
{2-2+2}
2

Answer 2

A)
= 3 - [5-(+4-6)]
= 3 - [ 5 - ( - 2)]
= 3 - [ 5 + 2]
= 3 - 7
= - 4

B)
= - 13 - [10 - (7 + 5)]
= - 13 - [ 10 - (12)]
= - 13 - [ 10 - 12]
= - 13 - [ - 2]
= - 13 + 2
= - 11

C)
= {2 + [3 ÷ (+ 10 - 11) + 1] + 2}
= {2 + [ 3 : ( - 1) + 1 ] + 2}
= {2 + [ - 3 + 1] + 2}
= {2 + [ - 2 + 2}
= { 2 - 2 + 2}
= 2