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Example problems
2x + 4y = 26
1x + 4y = 19
x = ?
3x + 4y = 52
4x + 2y = 46
x = ?
3x + 4y = 47
2x + 4y = 42
x = ?
3x + 4y = 23
2x + 2y = 12
x = ?
4x + 1y = 27
1x + 2y = 19
x = ?