I'm not understanding linear system by substitution. Can I please have an explanation on how to solve this problem?
5y = 3x + 15
6x = 10y - 30

Question

I'm not understanding linear system by substitution. Can I please have an explanation on how to solve this problem? 
5y = 3x + 15 
6x = 10y - 30

anonymous · Answer

If you multiply the first expression by 2 you will get-
6x + 10y = 30
6x + 10y = -30

Since the equations intercepts are different, and they have same slopes... they don't intersect each other. Therefor there is no solution.

uri · Answer

5y = 3x + 15 
6x = 10y - 30 

Re arrange the equations first
-3x+5y=15(multiply by 2)
6x-10y=-30

-6x+10y=30
  6x-10y=-30
==========

-6x+6x will be cancelled.
+10y-10y will be cancelled.
+30-30 will be cancelled.

So no solution.

anonymous · Answer

Thank you so much for the step by step. Preciate it. @uri

uri · Answer

Yw :)