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Equations & Systems

Level 15 / build-up

2-var Cramer - find x (mastery)

3 visual steps / 2-var Cramer find x

1. Coefficient D

Read x window in place, divide.Db-568-3-5968same rowsDx-59668-3D = -33Dx = -231x = 7
D = -33.

D = -33.

2. Target Dx

Read x window in place, divide.Db-568-3-5968same rowsDx-59668-3D = -33Dx = -231x = 7
Dx = -231.

Dx = -231.

3. x ratio

Read x window in place, divide.Db-568-3-5968same rowsDx-59668-3D = -33Dx = -231x = 7
x = 7.

x = 7.

Practice Level 15

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

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