Answer:
x = 15
LM = 18
MN = 18
LN = 18
Step-by-step explanation:
To find x:
x + 3 + 2x - 12 + 33 - x = 54
2x + 24 = 54
2x = 54 - 24
2x = 30
LM:
x + 3
15 + 3
18
MN:
33 - x
33 - 15
LN:
2x - 12
2(15) - 12
30 - 12
