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Equations & Systems

Level 28 / realistic untimed

3-var realistic - find x (no timer)

4 visual steps / realistic 3-var find x

1. Coefficient D

Read x window from the same equations.Db12340-9001526000-8-738010220-320same equationsDx-7380340-901022015260-3200-8D = -1440Dx = -36000x = 25
D = -1440.

D = -1440.

2. Target Dx

Read x window from the same equations.Db12340-9001526000-8-738010220-320same equationsDx-7380340-901022015260-3200-8D = -1440Dx = -36000x = 25
Dx = -36000.

Dx = -36000.

3. x ratio

Read x window from the same equations.Db12340-9001526000-8-738010220-320same equationsDx-7380340-901022015260-3200-8D = -1440Dx = -36000x = 25
x = 25.

x = 25.

4. Check

Read x window from the same equations.Db12340-9001526000-8-738010220-320same equationsDx-7380340-901022015260-3200-8D = -1440Dx = -36000x = 25
Substitute into one equation.

Substitute into one equation.

Practice Level 28

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

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