Answer:
12k=84
Step-by-step explanation:
Ⓗⓘ ⓣⓗⓔⓡⓔ
If you mean as an equation, it would be 12k=84
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The mistake is line 4, she should have divided 42 by 5, not add 5 and 16
Answer: 32.5sq in I believe
I multiplied all the sides (ex 0.5x2.5x2) and did that with all the other sides
So we are given the expression:
÷ 
When we divide fractions, we must flip the second term and change the sign to multiplication:

And then we multiply across:

Then we can break apart all of the like variables for simplification:

When we simplify variables through division, we subtract the exponent of the numerator from the exponent of the denominator. So we then have:



So then we multiply all of these simplified parts together:

So now we know that the simplified form of the initial expression is:
.
2.1 . 4.7 all u gatta do is put this into google