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Equations & Systems

Level 9 / foundation

2-var Cramer - find x (small)

3 visual steps / 2-var Cramer find x

1. Coefficient D

Read x window in place, divide.Db211-181same rowsDx811-1D = -3Dx = -9x = 3
D = -3.

D = -3.

2. Target Dx

Read x window in place, divide.Db211-181same rowsDx811-1D = -3Dx = -9x = 3
Dx = -9.

Dx = -9.

3. x ratio

Read x window in place, divide.Db211-181same rowsDx811-1D = -3Dx = -9x = 3
x = 3.

x = 3.

Practice Level 9

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

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