Question

Find d and all three sides

Answer 1

The triangles are congruent so
`2d+10` and
`45-3d` are the same

So we have

`2d+10=45-3d`
⇒
`5d+10=45`
⇒
`5d=35`
⇒
`d=7`

Plug in:

`2d+10=2(7)+10=14+10=24`

`45-3d=45-3(7)=45-21=24`

`d+8=7+8=15`