It's too short. Write at least 20 characters to get a great answer.It's too short. Write at least 20 characters to get a great answer.

Answer:
143°
Step-by-step explanation:
We know that the two lines are parallel, which means that since ∠A and ∠B are same-side angles, they are equal. That means we can set the expressions equal:
7x + 24 = 3x + 92
4x = 68
x = 17
Plug this into the expression for A:
∠A = 7x + 24 = 7 * 17 + 24 = 143
The answer is 143°.
Since both lines are parallel, both equations are equal.
7x + 24 = 3x + 92
Solve for x.
~Subtract 24 to both sides
7x + 24 - 24 = 3x + 92 - 24
~Simplify
7x = 3x + 68
~Subtract 3x to both sides
7x - 3x = 3x - 3x + 68
~Simplify
4x = 68
~Divide 4 to both sides
4x/4 = 68/4
~Simplify
x = 17
Substitute 17 with x in ∠A
∠A = 7x + 24
∠A = 7(17) + 24
∠A = 119 + 24
∠A = 143
Best of Luck!