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KengaRu [80]
4 years ago
6

2x + y = 3

Mathematics
1 answer:
schepotkina [342]4 years ago
6 0

Answer:

result:

y = 1

Step-by-step explanation:

First we multiply all the terms of the second equation with -2. So we have:

x - 2y =  - 1 \\ ( - 2)x - 2y( - 2) =  - 1( - 2) \\  - 2x  + 4y = 2

When we add them together the terms 2x and -2x will cancel out.

2x + y - 2x + 4y = 3 + 2 \\ y + 4y = 5 \\ 5y = 5 \\ y =  \frac{5}{5}  \\ y = 1

Hope it helped :)

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nekit [7.7K]

If α and β are the Roots of a Quadratic Equation ax² + bx + c then :

✿  Sum of the Roots : α + β \mathsf{= \frac{-b}{a}}

✿  Product of the Roots : αβ \mathsf{= \frac{c}{a}}

Let the Quadratic Equation we need to find be : ax² + bx + c = 0

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Leading Coefficient of our Quadratic Equation is (a)

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