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dondre54
21.10.2020 •
Mathematics
Solve the system of equations without graphing. Explain or show your reasoning.
{2y=x−4
{4x+3y=5
Solved
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Ответ:
(2, -1)
Step-by-step explanation:
We can subtract x from both sides from the first equation, then multiply the first equation by 4, so it's easier to solve later:
-4x+8y = -16
4x+3y = 5
Then, we can add the 2 equations, so the x cancels out:
11y = -11
y=-1
Now, we can plug y as -1 to any of the equations above:
4x+3*(-1)=5
4x=8
x=2
Therefore, the solution to these 2 equations are (2, -1)
Ответ:
Slope and a point that is not an intercept
Step-by-step explanation: