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3 years ago

-x -3y =18 x + 2y = -14

Mathematics

2 answers:

kherson [118]3 years ago

8 0

Answer:

Step-by-step explanation:

The system of equations is expressed as

-x -3y =18 - - - - - - - - - - - - - -1

x + 2y = -14 - - - - - - - - - - - - - -2

We would eliminate x by adding equation 1 to equation 2. It becomes

- y = 4

Dividing the left hand side of the equation and the right hand side of the equation by - 1, it becomes

- y/ - 1 = 4/ - 1

y = - 4

Substituting y = - 4 into equation 1, it becomes

-x -3 × - 4 =18

- x + 12 = 18

Subtracting 12 from the left hand side of the equation and the right hand side of the equation, it becomes

- x + 12 - 12 = 18 - 12

- x = 6

x = - 6

Nina [5.8K]3 years ago

3 0

Answer:

-y = 4

y = -4

x + 2(-4)= -14

x - 8 = -14

x = -6

(-6,-4)

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