Answer:

Step-by-step explanation:

we know that

In a parallelogram, opposite angles are congruent and consecutive angles are supplementary

In this problem the quadrilateral ABCD is a parallelogram

so

-----> by opposite angles in a parallelogram

---> by consecutive angles in a parallelogram

substitute the value of x

the correct answer is: 10

(2/5, 7/10) = LCM(5, 10) = 2×5 = 10

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<u>9.1031, 9.209, 9.23, 9.3</u>