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  • 26-07-2019
  • Mathematics
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Solve the system of equations and choose the correct ordered pair.
2x - 6y = 8
5x - 4y = 31

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Аноним Аноним
  • 26-07-2019

Answer:

The  solution is (7, 1).

Step-by-step explanation:

2x - 6y = 8    Multiply this by  -5.

5x - 4y = 31   Multiply this by 2.

-10x + 30y = -40  ...(1)

10x   - 8y = 62.........(2)

Adding (1) and (2):

22y =  22

y = 1.

Substitute for y in the first equation:

2x - 6(1) = 8

2x = 14

x = 7.

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