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{5x-8y=17
{ 12x + 8y = 164
{ 5x - 8y = 17
17x = 181
x = 181 / 17
3x + 2y = 41
3 * (181/17) + 2y = 41
543 / 17 + 2y = 41
2y = 41 - 543 / 17
2y = 697 / 17 - 543 / 17 = 154 / 17
y = 154 / 34
{ x = 181 / 17
{y = 154 / 34