Question

1/3 + 5/s-4=2

s-4+15=2
s-4=2-15
s=(2-15)+4
s= -13+4
a=9

Answer 1

probably:

1/3 + 5/(s-4) = 2

time 3(s-4)

1(s-4) + 5(3) = 2(3)(s-4)
s-4 + 15 = 6s - 24
35 = 5s
s = 7