Best Answer

4X + 7Y = 60

-4X + 7Y = - 4

-----------------------+

14Y = 56

Y = 4

---------

insert back into one of these equations to find X

4X + 7(4) = 60

4X + 28 = 60

4X = 32

X = 8

------------check

4(8) + 7(4) = 60

32 + 28 = 60

60 = 60

----------------checks, now second equation

-4(8) + 7(4) = -4

-32 + 28 = -4

-4 = -4

--------------checks

solution set.

X = 8

Y = 4

(8,4)

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Q: Solve the system of equations Enter your answer as an ordered pair 4x plus 7y equals 60 negative 4x plus 7y equals negative 4?

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Plug your ordered pair into both of your equations to see if you get they work.

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By elimination: x = 3 and y = 0

Do you mean: 4x+7y = 47 and 5x-4y = -5 Then the solutions to the simultaneous equations are: x = 3 and y = 5

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