Question

Find the value of x for which abcd must be a parallelogram 5x-1 2x+5

Answer 1

If ABCD is a parallelogram then:
5 x - 1 = 2 x + 5
5 x - 1 + 1 = 2 x + 5 + 1
5 x - 2 x = 2 x - 2 x + 6
3 x = 6
x = 6 : 3
Answer:
x = 2