Answer:
44°
Explanation:
We Know
The sum of three angles in a triangle must add up to 180°.
Let's solve
3x + 15 + 4x - 12 + 79 = 180°
7x + 82 = 180°
7x = 98°
x = 14
Now we put 14 in for the x and find the other 2 missing angles.
3x + 15
3(14) + 15
42 + 15
57°
4x - 12
4(14) - 12
56 - 12
44°
So, the measure of the three angles are: 44°, 57°, and 79°. So, the measure of the smallest angle is 44°