Question

calcule a expressao {4-[5+(8-6-×4)÷(12-8×1)]×(12×3-51÷3)}÷(5-4×5)

Answer 1

{4-[5+(8-24)÷(12-8)]×(36-17)}÷(5-20)
{4-[5+16÷4]×19}÷15
{4-[5+4]×19}÷15
{4-9×19}÷15
{4-171}÷15
167÷15
11,13