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dybincka [34]
2 years ago
9

Solve the system of equations by using substitution.​

Mathematics
1 answer:
katrin [286]2 years ago
8 0

Answer:

(x,y) = (-1,1)

Step-by-step explanation:

Given the equations

y = 2x + 3

x - y = -2

substitute the value of y in the first equation into the second

x - (2x + 3) = -2

x -2x - 3 = -2

-x - 3 = -2

add 3 to both sides

-x = -2 + 3

- x = 1

Divide both sides by -1

x = -1

Substitute into the first equation

y = 2(-1) + 3

y = -2 + 3

y = 1

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Answer:

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Step-by-step explanation:

Here, we want to rationalize the denominator of the following surdic fraction;

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To rationalize this, we have to multiply the numerator and the denominator by the conjugate of the denominator

The conjugate of the denominator is √2 - √3

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Is urgent What is the equation of the line, in point-slope form, that goes through (2, -1)
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Step-by-step explanation:

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