## anonymous 3 years ago Find the value of x.

1. anonymous

2. anonymous

s$\frac{ x - 3 }{ 8 } =16$

3. anonymous

Typo. The s means nothing.

4. UnkleRhaukus

16:4 8:2 x-3:2.5

5. anonymous

I'm not familiar with these ratios. 16/4? Or 16 = 4?

6. anonymous

$\frac{ 16 }{ 4 }$

7. anonymous

Since they're similar, you can set up a proportion. Make sure you keep the same triangle in the same fraction and the same sides in the same spot (numerator or denominator). $\frac{ x-3 }{ 16 }=\frac{ 2.5 }{ 4 }$Now, cross multiply:$4(x-3)=16(2.5)$$4x-12=40$ Can you solve from here? :o)

8. anonymous

$4x - 12 = 40$$4x = 40 + 12$$4x = 52$$4x / 4x = 52 / 4x$$x = 13$

9. anonymous

Great! :o)