i will crown brainliest ..... i hate get more math so muchhh
Answer:
Step-by-step explanation:
128 - 6x - 39 + 5x = -31 + 9x
89 -x = -31 + 9x
10x = 120
x = 12
m<QRS= -31 + 9(12)= -31 + 108= 77
m<TRS= -39 + 5(12)= -39 + 60= 21
m<QRT= 128 - 6(12)= 128 - 72 = 56