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2 years ago

What is the solution to this system of equations?x-2y=152x + 4y=-18

Mathematics

1 answer:

jeyben [28]2 years ago

4 0

Answer:

x = 3; y = -6

Step-by-step explanation:

x - 2y = 15

2x + 4y = -18

Multiply both sides of the first equation by 2. Write the second equation below it, and add the two equations.

2x - 4y = 30

(+) 2x + 4y = -18

---------------------------

4x = 12

4x/4 = 12/4

x = 3

Now we substitute 3 for x in the first equation and solve for y.

x - 2y = 15

3 - 2y = 15

-2y = 12

y = -6

Answer: x = 3; y = -6

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What is the solution to this system of equations?x-2y=152x + 4y=-18​

What is the solution to this system of equations?x-2y=152x + 4y=-18