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Equations & Systems

Level 29 / realistic untimed

3-var realistic - find y (no timer)

4 visual steps / realistic 3-var find y

1. Coefficient D

Read y window from the same equations.Db12340-9001526000-8-738010220-320same equationsDy12-7380-900102202600-320-8D = -1440Dy = 17280y = -12
D = -1440.

D = -1440.

2. Target Dy

Read y window from the same equations.Db12340-9001526000-8-738010220-320same equationsDy12-7380-900102202600-320-8D = -1440Dy = 17280y = -12
Dy = 17280.

Dy = 17280.

3. y ratio

Read y window from the same equations.Db12340-9001526000-8-738010220-320same equationsDy12-7380-900102202600-320-8D = -1440Dy = 17280y = -12
y = -12.

y = -12.

4. Check

Read y window from the same equations.Db12340-9001526000-8-738010220-320same equationsDy12-7380-900102202600-320-8D = -1440Dy = 17280y = -12
Substitute into one equation.

Substitute into one equation.

Practice Level 29

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

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