The measure of the angles of a triangle are represented by 2x + 15, x + 20, and 30 + 25. Find the measure of the smallest angle within the triangle. a 409 b85 d. 559​

answer:      

step-by-step explanation:

the answer is b.

step-by-step explanation:

identity property is where 0+whatever number=whatever number. basically 0+ a number.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.