C) 84
7(6x2)
Sry if it’s wrong
Using the formula a(b+c) = ab + ac, then 7(2x-6) = 14x - 42. The answer is D.
A ratio of 5:7 means out of 12 books, 5 are in one category and 7 are in another. (The “category” isn’t specified in this problem.)
So here we’re STARTING with 36 books; we want to find a ratio that is equal to 5:7 and adds up to 36. Well 36 = 3(12), and so if we multiply each number in the ratio by 3 as well, we might get what we want. Doing that gives us 15:21, which adds up to 36 and is equal to 5:7. Boom, that’s the answer.
P.S. Here’s a question you can think about: why do ratios stay the same when you multiply each number by the same amount? (For example, why is 3:1 the same as 6:2?)
Answer:
The correct option is 1. Fiona's first step is isolating constant 1.
Step-by-step explanation:
I took it on EDG
