Please help with these math problems . Multiple choice im begging

Write each fraction as an equivalent fraction with a denominator of 120then write the original fractions in order from samllest to largest

Thales was an ancient philosopher familiar with similar triangles. one story about him says that he found the height of a pyramid by measuring its shadow and his own shadow at the same time. if the person is 5-ft tall, what is the height of the pyramid in the drawing?

What is the anwers for 9+2x=5x-3-x