annafellows
02.01.2020 •
Mathematics
What is the solution to the system of equations? -2x + y = -5 3x – 2y = 12 a) (3, 1) b) (6, 3) c) (-2, -9) d) (-2, -1)
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Ответ:
The correct answer is D) (-2, -1)
Step-by-step explanation:
In order to solve this system of equations, start by multiplying the entire first equation by 2. Then add the two equations together. This will get the y's to cancel and allow you to solve for x.
-4x + 2y = -10
3x - 2y = 12
-x = 2
x = -2
Now that we have the value for x, we can find y by plugging the x value into either equation.
-2x + y = -5
-2(2) + y = -5
-4 + y = -5
y = -1
Ответ:
Step-by-step explanation:
the equation is:
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