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Equations & Systems

Level 20 / build-up

3-var Cramer - find x (medium)

3 visual steps / 3-var Cramer find x

1. Coefficient D

Read x window from the same equations.Db-2134-1213-2130-1same equationsDx13130-12-13-2D = 57Dx = -57x = -1
D = 57.

D = 57.

2. Target Dx

Read x window from the same equations.Db-2134-1213-2130-1same equationsDx13130-12-13-2D = 57Dx = -57x = -1
Dx = -57.

Dx = -57.

3. x ratio

Read x window from the same equations.Db-2134-1213-2130-1same equationsDx13130-12-13-2D = 57Dx = -57x = -1
x = -1.

x = -1.

Practice Level 20

Keep the columns in place and solve one window at a time.

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