To find the value for a in this equation, we can follow the next steps:
[tex]\frac{a}{5}-23=-25[/tex]First, multiply all of the equation by 5:
[tex]5\cdot(\frac{a}{5}-23=-25)\rightarrow\frac{5}{5}\cdot a-115=-125\rightarrow a-115=-125[/tex]Finally, add 115 to both sides of the equation:
[tex]a-115+115=-125+115\rightarrow a+0=-10\rightarrow a=-10[/tex]Therefore, the value for a is a = -10.