Question

if ab =x+3, bc=2x and ac=4x-5 if b lie on ac then the value of x is what?

Answer 1

as b lies on ac
ab+bc=ac
x+3+2x=4x-5
3x+3=4x-5
4x-3x=3+5
x=8

Answer 2

ab = x+3
bc = 2x
ac = 4x-5
if b lie on ac then we get the following equation :
x+3+2x = 4x-5
3x+3 = 4x-5
3+5 = 4x-3x
x = 8