A ratios says how much of one thing there is compared to another thing and the trick with ratios is to always multiply or divide the numbers by the same value
Answer:
3(x + 6)/18
= x + 6 /6
Step-by-step explanation:
hope this helps you
Red marbles : blue marbles = 4:7
16 - red marbles
x - blue marbles

There are 28 blue marbles.