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This is a simultaneous equation question:

x-2y = -4

2x-y = 1

Multiply all terms in the top equation by 2:

2x-4y = -8

2x-y = 1

Subtract the bottom equation from the top equation remembering that a minus minus equals a plus:

-3y = -9

Divide both sides of the equation by -3 to find the value of y remembering that a minus divided by a minus equals a plus:

y = 3

Substitute the value of y into the original equations to find the value of x:

Solution: x = 2 and y = 3

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โˆ™ 2009-10-29 15:41:05
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Q: What is the ordered pair of x-2y equals -4 2x-y equals 1?
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