Answer:
x = 18
Step-by-step explanation:
The smaller triangle (the one with sides 80 and 60) is similar to the larger one (meaning that the ratio of the sides should be the same).
The ratio is 4:3:
27 + 60 = 87
87/3 = 29
29*4 = 116
2x + 80 = 116
2x = 36
x = 18
