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rhettnyah
31.03.2020 •
Mathematics
1. y = 6x
2x + 3y = -20
Solved
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Ответ:
Step-by-step explanation:
To solve this system of equations, let's multiply the first equation by
to get a
term in each equation:
Now, let's add the two equations together:
Now, we can plug in this value of
into either equation to solve for
:
or
Therefore, the solution to this system of equations is
.
Ответ:
x = -1
y = -6
Step-by-step explanation:
y = 6x
2x + 3y = -20
Substitute the first expression into the second one
We have
2x + 3y = -20
2x + 3(6x) = -20
2x + 18x = -20
20x = -20
Divide both sides by 20 to isolate x
20x/20 = -20/20
x = -1
Remember the first expression
y = 6x
Therefore
y = 6(-1)
y = 6 x -1
y = -6
Check
2(-1) + 3(-6) = -20
-2 + -18 = -20
-2 - 18 = -20
-20 = -20
So our answer is correct
Ответ:
Hello,
x + 2 = 6
x = 6 - 2
x = 4
Bye :)