Question

1. Quadrilateral ABCD has AB = x+3 and CD= 5x –7. What is the length of x

for which the quadrilateral is a parallelogram?​

Answer 1

x = 2.5

Explanation:

since it's a parallelogram, AB = CD so:

x + 3 = 5x - 7

subtract x from each side of the equation:

3 = 4x - 7

add 7 to each side:

4x = 10

divide both sides by 4:

x = 2.5