Solving Systems of Equations
Cramer’s Rule
By
Jeffrey Bivin
Lake Zurich High School
[email protected]
Last Updated: October 11, 2005
uses determinants
to solve the system
System to be solved
5x + 2y = 16
3x – 5y = -9
5x + 2y = 163x – 5y = -9
16 2
-9 -5
5 2
3 -5
16
-9
-80 — (-18)
-25 — 6
-62
-31
2
5 16
3 -9
-45 — 48
-93
3
Final Result
x = 2
y = 3 (2,3) [email protected]
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