Question

I need to find the value of x and BC if B is between C and D

CB=4X-9, BD= 3X+5, and CD = 17

Answer 1

It is given in the question that B is in between C and D.

Therefore

`CB+ BD = CD`

Substituting the given values of CB,BD and CD, we will get

`4x-9+3x+5=17`

Combining like terms, we will get

`7x-4=17`

Now we need to move 4 to the right side by adding 4 to both sides, that is

`7x = 21 \\ x=3`