If we put it into an equation, and x was blue markers, we could say:
7x + x = 32
Then you'd simplify:
8x = 32
Then solve:
8x = 32
÷ 8
x = 4.
So now we know that there are 4 blue markers, we can multiply 4 by 7 to get the amount of red markers, which is 28. Hope this helps!
