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Equations & Systems

Level 13 / realistic untimed

2-var Cramer - find x (signed)

4 visual steps / 2-var Cramer find x

1. Coefficient D

Read x window in place, divide.Db-324-112-11same rowsDx122-11-1D = -5Dx = 10x = -2
D = -5.

D = -5.

2. Target Dx

Read x window in place, divide.Db-324-112-11same rowsDx122-11-1D = -5Dx = 10x = -2
Dx = 10.

Dx = 10.

3. x ratio

Read x window in place, divide.Db-324-112-11same rowsDx122-11-1D = -5Dx = 10x = -2
x = -2.

x = -2.

4. Check

Read x window in place, divide.Db-324-112-11same rowsDx122-11-1D = -5Dx = 10x = -2
Substitute into one equation.

Substitute into one equation.

Practice Level 13

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

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