Find the value of x in the triangle below.

Step-by-step explanation:

We have to find the value of x from the given triangle.

By mid segment theroem which says the midpoint in a triangle of any two sides is parallel to the third side and half of the third side's length

Therefore,

On multiplying the left hand side of the above equation by 2 from right hand side of the equation we will get:

On simplification

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -