Answer:
Explanation:
To find x and the degree measure of each angle, we can use the fact that the sum of the angles in a triangle is always 180 degrees.
(a) Writing an equation to find x, we have:
mZH + m<1 + m<J = 180
(2x - 3) + (5x + 7) + x = 180 (substituting given angle measures)
8x + 4 = 180 (combining like terms)
8x = 176
x = 22
Therefore, x = 22 is the solution to the equation.
(b) To find the degree measure of each angle, we can substitute x = 22 into the given expressions:
mZH = 2x - 3 = 2(22) - 3 = 41 degrees
m<1 = 5x + 7 = 5(22) + 7 = 117 degrees
m<J = x = 22 degrees
Therefore, the degree measures of the angles are mZH = 41 degrees, m<1 = 117 degrees, and m<J = 22 degrees.