Answer and Step-by-step explanation:
To find the measure of angle A, we need to add all of the angles together, equal it to 180, and solve for x.
3x + 1 + 2x - 15 + x + 14 = 180
Combine like terms.
6x = 180
Divide both sides of the equation by 6.
x = 30
Now we plug 30 in for x for the measure of angle A.
30 + 14 = 44
m∠A = 44 degrees.
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