kells56 kells56

29-06-2018
Mathematics

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9/(x - 8) = 4/5 how to solve this proportion

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twvogels twvogels

29-06-2018

[tex]\frac{9}{x-8}=\frac{4}{5}[/tex]
Cross multiply:
[tex](9)(5)=(4)(x-8)[/tex]
Simplify:
[tex]45=4x-32[/tex]
Group like terms:
[tex]77=4x[/tex]
Solve for x by division:
[tex]x=\frac{77}{4}[/tex]
[tex]x=19.25[/tex]

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