Answer:
x = 6, y = 9
Explanation:
One of the properties of a parallelogram is that the diagonals bisect each other, thus
y + 3 = 2x → (1)
2y = 3x → (2)
Subtract 3 from both sides in (1)
y = 2x - 3 → (3)
Substitute y = 2x - 3 into (2)
2(2x - 3) = 3x ← distribute left side
4x - 6 = 3x ( subtract 3x from both sides )
x - 6 = 0 ( add 6 to both sides )
x = 6
Substitute x = 6 in (3) for value of y
y = (2 × 6 ) - 3 = 12 - 3 = 9
Hence x = 6 and y = 9