Solve: (a+4)/2 = (a + 4)/a
cross-multipy
a(a+4) = 2(a+4)
a^2 + 4a = 2a + 8
a^2 + 2a - 8 = 0
this quadratic factors nicely.
Can you take it from there?
a(a+4) = 2(a+4)
a^2 + 4a = 2a + 8
a^2 + 2a - 8 = 0
this quadratic factors nicely.
Can you take it from there?