a: \(\Leftrightarrow16x-15x=5^2-2^4=25-16=9\)
=>x=9
b: \(\Leftrightarrow9x+4x=13\left(8-1\right)=13\cdot7\)
=>x=7
c: \(\Leftrightarrow25x-16x=81-6\cdot9=81-54=27\)
=>9x=27
=>x=3
d: \(\Leftrightarrow\left(x+1\right)=20:\dfrac{26}{13}=20\cdot\dfrac{1}{2}=10\)
=>x=9
e: =>x+2=15:(30/10)=5
=>x=3