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Y=5x+19 -4x-2y=18 How do I solve this system?

Y=5x+19 -4x-2y=18 How do I solve this system?
asked 171k views
5 votes
Y=5x+19
-4x-2y=18
How do I solve this system?

asked
User Milad Zahedi
by
7.9k points

1 Answer

6 votes

y=5x+19\\ -4x-2y=18

Lets solve it by substitution


-4x-2(5x+19)=18\\-4x -10x- 38 = 18\\-14x -38=18\\-14x = 56\\\\x = -4

Now we plug x = -4 and solve for y


y=5x+19\\y = 5(-4) + 19\\y=-20 + 19\\\\y = -1

So the solution is (-4,-1)

answered
User Andras Kloczl
by
9.1k points
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