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the Y in the sentence X plus Y equals 5 is Y=3 or 2 if the X is 2 or 3
y=2x-3 y=-x-3
5x - 3y -7x + 2y +3x = (5-7+3)x + (-3+2)y = x - y
Solve this simultaneous equation using the elimination method after rearraging these equations in the form of: 3x-y = 5 -x+y = 3 Add both equations together: 2x = 8 => x = 4 Substitute the value of x into the original equations to find the value of y: So: x = 4 and y = 7