cesar4478
21.08.2019 •
Mathematics
Simplify
2n^2-9n=4
over
2n^2-5n-12
can i get a step by step !
Solved
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Ответ:
(2n*2)-9n/(2n*2)-5n-12=4
multiply the parentheses
4n-9n/4n-5n-12=4
simplify
-5n/-n-12=4
cancel out the n's
4n/-12=4
flip and multiply sides
-48/4n
simplify
-12/n
Ответ:
If you go 27-5-4=18
18-5-4=9
9-5-4=0
so 5+5+5 (because it's 5 girls to 4 boys, only count the 5's) =15
Hope this helps! :)