Question

Please help! 100 points!!!!!

Answer 1

a= -4 hope this helps!!!

Answer 2

`▪▪▪▪▪▪▪▪▪▪▪▪▪  {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪`

Let's solve for a :

• 
  `a - 15 = 4a - 3`

• 
  `4a - a = - 15 + 3`

• 
  `3a = - 12`

• 
  `a = - 12 / 3`

• 
  `a = - 4`

value of a = -4