Question

What is the value of AB?

Answer 1

(-3x + 29) / 4= (-7x + 46)/5
cross multiply
5(-3x + 29) = 4(-7x + 46)
-15x + 145 = -28x + 184
13x = 39
    x = 3

AB = -3(3) + 29 = - 9 + 29
AB = 20

answer
20