solve the simultaneous equations y=x-2 and y=3x+5
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Answer: y = x-2
y = 3x + 5
x-2 = 3x+5
x+3x = 5+2
4x = 7
x = 7/4
y = x-2
y = 7/4 - 2
y = 7-8/4
y = -1/4
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