Step-by-step explanation:
The straight angle is a n angle equal to 180 degrees.
So (3x + 15) + (2x + 20) = 180
3x + 15 + 2x + 20 = 180
5x + 35 = 180
5x = 145
x = 29
please give me a brainliest answer
Answer:
3x+15 + 2x + 20 = 180 = 3x+15 + 2x + 20 = 180 = 5x+15 + 20 = 180 5x+35 = 180 = 5x = 145 = x = 145/5 = x = 29 proof is 3(29) + 15 + 2(29) + 20 = 180 = 87 + 15 + 58 + 20 = 180 = 102 + 78 = 180
