Hello!
Angles CAD and EAB are congruent.
The reason why is that they are vertical angles. Their points meet and therefore they are congruent.
I hope this helps!
Lets see together how it gets done
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so the answer is 3 months
First solve one of the two equations (whichever is easier) for either x or y, whichever variable is easier. Let's say you solved for x. Then plug what x equals into the 2nd equation as x. So if you got x = 2y + 1, plug that into your other equation and solve for y (you should get a number value).
Now take whatever y equals and plug that back into what you got when you solved for x (the x = 2y + 1) to get what x equals.