Question

substitution, elimination method
3x-4y=6
3x-3y=4​

Answer 1

Step-by-step explanation:

3x-4y=6

3x-3y=4

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after simplifying, we get x=-2/3 and y=-2

Answer 2

Step-by-step explanation:

$3x - 4y = 6 \\ 3x -3y = 4 \\ - \: \: \: \: + \: \: \: \: \: \: \: \: \ - \\ - 4y + 3y = 6 - 4 \\ or \: \: - y = 2 \\ or \: \: y = - 2 \\ 3x - 4 \times ( - 2) = 6 \\ or \: \: 3x + 8 = 6$

$or \: \: x = \frac{ - 2}{3}$