Answer:x = 6/5
Step-by-step explanation:
15/30 = 5x/12
15/30 crosses out t 1/2
1/2 = 5x/12
simplify the equation suing cross - multiplication
12 =10x
10x = 12
x = 6/5 or you can simplify it more to x = 1 1/5 or x = 1.2