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Lapatulllka [165]
3 years ago
10

Solve the system of equation and choose the correct ordered pair.!2x-6y=8 5x-4y=31

Mathematics
1 answer:
kondor19780726 [428]3 years ago
8 0

Answer:

The correct ordered pair is (7,1)

Step-by-step explanation:

The given system has equations:

2x - 6y = 8....(1)

5x- 4y = 31....(2)

We make x the subject in the first equation to get:

x = 4  + 3y...(3)

Put equation 3 into equation 2 to get:

5(4 + 3y) - 4y = 31

Expand:

20 + 15y - 4y = 31

15y - 4y = 31 - 20

11y = 11

y = 1

Put y=1 into equation 3 and solve for x.

x = 4 + 3( 1) = 7

The correct ordered pair is (7,1)

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