What is the value of x? 20 35 60 70

They are vertical angles, and so set them equal to each other

x + 40 = 3x

Isolate the x. Subtract x from both sides

x (-x) + 40 = 3x (-x)

Simplify

40 = 3x - x

40 = 2x

Isolate the x. Divide 2 from both sides

40/2 = 2x/2

x = 40/2

x = 20

20, or (A) is your answer

hope this helps

i believe the correct answer is b.

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