Question

KL = 4x +3.
JK = 4x + 2, and
JL = 45
Find KL.

Answer 1

`KL=23`

Explanation:

We are given the length of the whole line and its two halves. Since JK and KL make up the line JL, adding them together would make the line JL.

`(4x+3)+(4x+2) = 45`

`8x+5=45`

`8x=40`

`x=5`

Now we can plug the value of
`x` back into the expression we were given for the line KL.

`4(5)+3`

`23`