91
Explanation:[tex]\frac{27-(1-5)^3}{2\times8-15}[/tex][tex]\begin{gathered} 1-5\text{ = -4} \\ =\frac{27-(-4)^3}{16-15} \end{gathered}[/tex][tex]\begin{gathered} (-4)^3=-4\times-4\times-4\text{ = -64} \\ =\frac{27-(-64)}{1} \end{gathered}[/tex]
Multiplication of same sign gives positive number. Multiplication of opposite signs give negative number.
[tex]\begin{gathered} =\frac{27+64}{1} \\ =\frac{91}{1} \\ =\text{ 91} \end{gathered}[/tex]
