+257 \(\begin{align*} 4x-3y&=2a,\\ 2x+y&=3a, \end{align*}\)
If the solution (x,y) works and x=3 what is the value of a?
+36916 Multiply second equation by '3' then add the two equations together to get
10x = 11a and with x= 3
30 = 11 a or a = 30/11
