Answer:
x=5, y=4. (5, 4).
Explanation:
y=2x-6
y=5x-21
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2x-6=5x-21
2x-5x-6=-21
-3x-6=-21
-3x=-21+6
-3x=-15
3x=15
x=15/3
x=5
y=2(5)-6
y=10-6
y=4
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