Given the equation: $\displaystyle {a}-\frac{{4}}{{5}}=\frac{{1}}{{10}}$

Determine if $\displaystyle {a}={1}$ is a solution of the equation



Determine if $\displaystyle {a}=-\frac{{9}}{{10}}$ is a solution of the equation



Determine if $\displaystyle {a}=\frac{{9}}{{10}}$ is a solution of the equation