Respuesta :
-5 = a/18
multiply by 18 on each side
-5 * 18 = a/18 * 18
-90 = a
Answer: a = -90
Answer is JKismyhusbandbae:
[tex]\mathrm{Switch\:sides}\\\frac{a}{18}=-5\\\mathrm{Multiply\:both\:sides\:by\:}18\\\frac{18a}{18}=18\left(-5\right)\\Simplify\\a=-90[/tex]