Question

If ABCD is a parallelogram, what will be the value of BC?

Answer 1

9x+3=6x+18
-6x . -6x
3x+3=18
-3 . -3
3x=16
/3 . /3
x=5.33

6*5.33+18=50 , So BC equals 50 units.

Answer 2

78

Explanation:

Hello

A Parallelogram is a flat shape with opposite sides parallel and equal in length, in this case .

side AB = side DC

9x+3 = 11x-17

let x

`9x-11x=-17-3\\-2x=-20\\x=(-20)/(-2) \\x=10`

let's replace the value ​​of x in the equation of the side BC

`BC=6x+18\\BC=6*(10)+18\\BC=78`

Have a nice day