Question

ABCD is a parallelogram. If AB = 2x - y, CD = 7, BC = x + y , AD = 2 find x and y.

Answer 1

x+y = 2
2x-y = 7
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3 x = 9
x = 3
y = -1
impossible, typo ?

Answer 2

X=2X-3OR 2X-X=3;X=3 IF X=3 Ab=3 and BC=2×3-3=3