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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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