If 3/5 of all the brownies is 21, then 5/3 of 21 is the number of the brownies that Lauren brought in.
That probably sounded super confusing. When multiplying a number by a reciprocal of a fraction (a fraction where the numerator and denominator is reversed), the previous fraction multiplication is reversed.
Multiplying 21 with 5/3 will give us the original number of brownies.

Lauren originally brought 35 brownies.
Answer:
x= 14 y= 13
Step-by-step explanation:
Use substitution or elimination
There are many ways you can write a ratio. They're all basically the same thing, though. 5:9, 5 to 9, and 5/9 (which is a fraction) are all just different ways to write ratios.
Each number is adding 3 to get the next one. We can test this by applying this rule to the sequence of numbers.
24+3=27✅
27+3=30✅
30+3=33✅
This method is correct, so all we have to do is apply it to the last number to get the next one.
33+3=36
Hope this helps!
Answer:
y= -1/3x - 4
Step-by-step explanation:
there you go