SOLUTION: solve by substitution 3x+6y=-15 x+2y=-5 with steps please thank you in advance.

Question 324016: solve by substitution
3x+6y=-15
x+2y=-5
with steps please
thank you in advance.
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

From the second equation,

Substitute into the first,

True, now what?
The second equation and the first equation are the same equation (multiply the second by 3 to get the first).
So every solution of eq. 1 is a solution of eq. 2, there are an infinite number of solutions.

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