Question

PLEASE PLEASE PLEASE HELP!!

Can someone please help me with a step by step of this problem ? I'll seriously appreciate it, and thank you so so so much in advance!!
DON'T ANSWER IF YOU'RE UNSURE!!! I need actual help, please don't just take my points. :c

Answer 1

the two triangles are similar so you can set up a proportion remember to keep the proportional sides on the same fraction 8 goes with 5 and x with 3

Here is the proportion:
8/5 = x/3
24 = 5x - Cross multiply
24/5 = 4.8 = x - Divide both sides by 5