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borishaifa [10]
4 years ago
14

Solve the system by elimination 2x+7y=1 2x-4y=12

Mathematics
2 answers:
PSYCHO15rus [73]4 years ago
8 0

Answer:

x = 4 y= -1

Step-by-step explanation:

Solve the system by elimination by stacking the equations lining up the variables.

2x + 7y = 1

2x - 4y = 12

Next, subtract each of the like terms.

  2x + 7y = 1

-  2x - 4y = 12

-----------------------

   0x +11y = -11

            y = -1

Then substitute y = -1 into one of the equations.

2x + 7(-1) = 1

2x - 7 = 1

2x = 8

]x = 4

konstantin123 [22]4 years ago
7 0

Answer:

y=-1, x=4

Step-by-step explanation:

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