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To find the value of x, we need to use the fact that vertical angles are congruent. This means that ∠1 and ∠3 are equal to each other.
Since m∠1 = (4x + 26)° and m∠3 = 98°, we can set up the equation:
4x + 26 = 98
Subtracting 26 from both sides:
4x = 72
Dividing both sides by 4:
x = 18
Therefore, the value of x is 18.