Question

Choose a method you prefer to solve for a system of linear equations.

2x + 4y = -4
2x-y=6

Answer 1

Elimination

x = 2

y = -2

Explanation:

Elimination

2x + 4y = -4

2x - y = 6

Subtract the second equation from the first

5y = -10

Divide both sides by 5

y = -2

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Substitute for y = -2 in the second equation

2x - -2 = 6

2x + 2 = 6

subtract 2 from both sides

2x = 4

Divide both sides by 2

x = 2