Question

Solve the SOE:
3x + y = 6
x + 4y = -20
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Answer 1

Step-by-step explanation:

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Answer 2

Answer:

Let us make the coefficient of x equal so that they can be eliminated. Hence, to do so, we have to multiply the second equation by 3 on both LHS and RHS of the equation.

Multiplying the second equation by 3, we get:

3x + 12y = -60

Subtracting the two equations, we'll get:

$- 11y = 66 \\ 11y = - 66 \\ y = - 6$

Applying value of y to. equation 1, we get:

$3x + y = 6 \\ 3x - 6 = 6 \\ 3x = 12 \\ x = 4$

Thus,

$x = 4 \\ y = - 6$

Hope this helps.

Thanks.