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Sagot :
Answer:
x = -5
Step-by-step explanation:
I) Substitute:
3x + 2y = -5
3x + 2(5) = -5
3x + 10 = -5
II) Solve:
3x + 10 = -5
3x = -15 (Subtract 10 from both sides)
x = -5 (Divide both sides by 3)
Answer:
x = -5
y = 5
Step-by-step explanation:
We are given the system of equations :
3x + 2y = -5
y = 5
This can be solved through the process of substitution, mainly because y in the second equation already has a value in of its own and can be replaced with the y in the first equation. Therefore :
3x + 2y = -5
y = 5
3x + 2(5) = -5
3x + 10 = -5
Solve for x, first by subtracting ten by both sides :
3x = -15
Divide 3 by both sides to isolate x :
x = -5
Now that we have x, we have solved our system of equations, but let's prove it first.
x = -5
y = 5
3(-5) + 2(5) = -5
-15 + 10 = -5
Therefore, our two variables are x = -5 and y = 5
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