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Assuming y=2x+5 and x=2y-15
y=2x+5 (1)
x=2y-15 (2)
Substitute y=2x+5 into (2):
x=2(2x+5)-15
x=4x+10-15
0=3x+10-15
0=3x-5
5=3x
5/3=x (x=5/3)
Substitute x=5/3 into y=2x+5:
y=2(5/3)+5
y=10/3+5
y=25/3
x=5/3, y=25/3
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∙ 11y ago
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5
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