Question

AD is the perpendicular bisector of BC.

BD = 5x – 10 and DC = 3x + 10.
Determine the value of x.

Answer 1

Explanation:

as AD bisects them they will be two equal parts so

5x-10=3x+10

5x-3x=10+10

2x=20

divide both sides by 2 and

x=10

Answer 2

5x-10= 3x+10

5x-3x= 10+10

2x÷2= 20÷2

x= 10