Answer:
x = 18
Step-by-step explanation:
The parts of the triangles are proportional, so you can write ...
2x/80 = 27/60
Multiply by 120:
3x = 54
Divide by 3:
x = 18

Because there's one 3 & four 7's .

Because there are two 2's & four 9's
2 - 2n = 3n + 17 > -2n = 3n + 15 > -5n = 15 > n = -3
Answer: 107
Step-by-step explanation: