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Equations and Systems Guide

Equations & Systems Level 9: 2-var Cramer - find x (small). 2-var Cramer find x.

1. Coefficient determinant

1. Coefficient determinantUse the coefficient columns.
Question
Fade the RHS; read x, y in place.
D = 3.

2. Target determinant

2. Target determinantKeep every column fixed; apply sign -.
Fade x; read y, RHS in place.
Dx = 9.

3. Read

3. ReadUse the settled ratio.
x = 3.