Answer:
21
Step-by-step explanation:
put 21 were x is and then divide 21÷7=3
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I think x equals 54
Hope this helps
Lets go step by step and factor out each as we go
first lets factor out a 3 since 3 is common in 9 and 3
3(3ab^2 - abc)
now lets factor out a since its common in both
3a(3b^2 - bc)
now lets factor out a b since its common in both
3ab(b - c)
we can't factor anything else out so we are done.
Answer:-3/7
Use two points and then do y-y/x-x
