Answer and explanation:
We know that the sum of the angles in a triangle is 180 degrees. Therefore, we can write the equation:
7x + (7x + 1) + (8x + 3) = 180
Simplifying this equation, we get:
22x + 4 = 180
Subtracting 4 from both sides, we get:
22x = 176
Dividing both sides by 22, we get:
x = 8
Now that we know the value of x, we can find the measure of each angle in triangle ABC:
m∠A = 8x + 3 = 67 degrees m∠B = 7x = 56 degrees m∠C = 7x + 1 = 57 degrees
Therefore, the measure of angle A is 67 degrees, the measure of angle B is 56 degrees, and the measure of angle C is 57 degrees.