Respuesta :

spoiledmilk
84=-19+a/4
+19+19 {add 19 to both sides
65=a/4
*4    *4 {multiply by 4 to isolate the variable
[260=a]
Flip the equation. [tex] \frac{1}{4} a [/tex]− 19=84
and add 19 to both sides
[tex] \frac{1}{4} a [/tex]−19+19=84+19

[tex] \frac{1}{4} a [/tex]=103
so than multiply by 4
4*([tex] \frac{1}{4} a [/tex])(4)*(103)

Your final answer would be
a=412