Question

Can you help me ? 70 points

Answer 1

`x=5`

Explanation:

CE = EB since E is the midpoint of CB (proven by AD intersecting it).

If CE=EB, then:

`2x=15-x\\`

Add
`x` to both sides

`3x=15\\`

Divide both sides by 3

`x=5`

Answer 2

5

Explanation:

Since the diagonals of a parallelogram bisect each other, the two halves must be equal. Therefore:

`15-x=2x \\\\15=3x \\\\x=5`

Hope this helps!