SephI Group Title Can someone explain this to me because I'm confused. http://prntscr.com/171l1o one year ago one year ago

1. mathstudent55

The key to this problem is that the figures are similar. The lengths of corresponding sides of similar figures are in proportion.

2. mathstudent55

6x corresponds to 18, and 5x + 10 corresponds to 20 Write a proportion and solve it.

3. SephI

Uhh, would it be 6x/18 = 5x/10?

4. zepdrix

$\large \frac{6x}{18}=\frac{5x+10}{20}$ I think you had the right idea, I'm just not sure what happened on the right side.

5. mathstudent55

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6. SephI

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7. mathstudent55

yes

8. SephI

Now I just solve forx?

9. mathstudent55

yes

10. SephI

This one would be 9/3x = 8/x + 5, correct? http://prntscr.com/171mgs

11. mathstudent55

yes