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Equations & Systems

Level 22 / mastery

3-var Cramer - find z (medium)

3 visual steps / 3-var Cramer find z

1. Coefficient D

Read z window from the same equations.Db-2134-1213-2130-1same equationsDz-21134-1013-1D = 57Dz = 171z = 3
D = 57.

D = 57.

2. Target Dz

Read z window from the same equations.Db-2134-1213-2130-1same equationsDz-21134-1013-1D = 57Dz = 171z = 3
Dz = 171.

Dz = 171.

3. z ratio

Read z window from the same equations.Db-2134-1213-2130-1same equationsDz-21134-1013-1D = 57Dz = 171z = 3
z = 3.

z = 3.

Practice Level 22

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

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