Elimination with integer coefficients

Elimination with integer coefficients

Secondary 2
TGM Original Questions

Solve each of the following pairs of simultaneous equations by the elimination method.

  1. \(x+y=9\)
    \(x-y=3\)
  2. \(2x+3y=7\)
    \(4x-y=7\)
  3. \(3x-2y=12\)
    \(x+2y=4\)
  4. \(5x+2y=4\)
    \(3x-2y=12\)

Solution:

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Answer:(a) \((6,3)\), (b) \((2,1)\), (c) \((4,0)\), (d) \((2,-3)\).

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