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Equations & Systems

Level 27 / realistic untimed

2-var realistic - find y (no timer)

4 visual steps / realistic 2-var find y

1. Coefficient D

Read y window in place, divide.Db125-40-752101200-1650same rowsDy1251200-75-1650D = 23250Dy = -116250y = -5
D = 23250.

D = 23250.

2. Target Dy

Read y window in place, divide.Db125-40-752101200-1650same rowsDy1251200-75-1650D = 23250Dy = -116250y = -5
Dy = -116250.

Dy = -116250.

3. y ratio

Read y window in place, divide.Db125-40-752101200-1650same rowsDy1251200-75-1650D = 23250Dy = -116250y = -5
y = -5.

y = -5.

4. Check

Read y window in place, divide.Db125-40-752101200-1650same rowsDy1251200-75-1650D = 23250Dy = -116250y = -5
Substitute into one equation.

Substitute into one equation.

Practice Level 27

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

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