Thursday, 12 February 2015

Different Faces of Algebra

The total length of 4 roads is (3x - 1) km.
What are the possible lengths of the 4 roads in kilometres?

e.g. The length of the 4 roads are: x km, x km, x-7 km, 6 km
Check: x + x + (x - 7) + 6 = 3x - 1

Enter your suggested lengths in comments.

1 comment:

  1. 3x - 1 = x + x + x - 1

    1. √x km, √x km, x km, x - 1 km
    2. x/2 km, x/2 km, x km, x - 1 km
    3. 2x km, x/3 km, x/3 km, x/3 - 1 km
    4. x km, x km, 11 km, x - 12 km

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