Straight

https://www.youtube.com/watch?v=HQc-54hQ8kw - that's the video :/

What do you want to know?

you missed 34a, when you distribute.

$\frac{1}{5} \cdot (a + 34) = \frac{1}{5} \cdot a + 34 \cdot a$

What do you want to know?

$33 \frac{1}{3} \% = 33.3\overline{3} \% = \frac{1}{3}$

$\frac{1}{3} \cdot 12 = \frac{12}{3} = 4$

x > 2

Why are you copying EP 's Answer?

Why are you asking this here? Just PM him.

670% = 670/100 (/10) = 67/10 = 6 7/10.