Simplest form of:
12/30=2/5
12/20=3/5
21/35=3/5
Absolute value was $55. I don't really get the problem...
For lines to be parallel, they have to have the same slopes. For the equation given as Ax + By + C = 0, the slope is -A / B. Equating the slopes of the given equations of lines,
- (3 / -5) = - (2 / k)
The value of k is equal to -10/3.
