The question goes on to say half the age John will be in 8 years. I do not see 1/2 in your equation.
Denis McField multiplied both sides by 2. Let me show you step by step:
x - 5 = (1/2)(x + 8)
2 × (x - 5) = 2 × (1/2)(x + 8)
2(x - 5) = x + 8
x+8 = 2(x-5)
Denis McField multiplied both sides by 2. Let me show you step by step:
x - 5 = (1/2)(x + 8)
2 × (x - 5) = 2 × (1/2)(x + 8)
2(x - 5) = x + 8
x+8 = 2(x-5)
Thank you. You see, I am at the level of "Math For Dummies" as I made known to member Dan.