Question

100-3x{5+8:2-[8-3(7-6)]} ?

Answer 1

   100 – 3 × {5 + 8 : 2 – [8 – 3 × (7 – 6)]}
= 100 – 3 × {5 + 4 – [8 – 3 × 1]} 
= 100 – 3 × {5 + 4 – [8 – 3]} 
= 100 – 3 × {5 + 4 – 5} 
= 100 – 3 × 4 
= 100 – 12
= 88

Answer 2

100-3x{5+4-[3x(7-6)]}
100-3x{9-3}
100-3x6
100-18
82