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-3x-4y=-1 3x-y=-4 elimination

User Adam Moisa
by
8.4k points

1 Answer

4 votes

Answer:

(- 1, 1 )

Explanation:

- 3x - 4y = - 1 → (1)

3x - y = - 4 → (2)

add (1) and (2) term by term to eliminate x

0 - 5y = - 5

- 5y = - 5 ( divide both sides by - 5 )

y = 1

substitute y = 1 into either of the 2 equations and solve for x

substituting into (2)

3x - 1 = - 4 ( add 1 to both sides )

3x = - 3 ( divide both sides by 3 )

x = - 1

solution is (- 1, 1 )

User Itsraghz
by
8.6k points

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