Question

12Y-14X=-19
12X-14Y=-20​

Answer 1

-14x + 12y = - 19 (×12

12x - 14y = - 20 (×14

-168x + 144y = - 228

168x - 196y = -280

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- 52y = - 508

y= - 508/-52= 127/13

-14x + 12(127/13) =-228

-14x + 1524/13 = - 228

-182x + 1524 = 2964

-182x = 2964 - 1524

-182x = 1440

X = 1440/-182= - 720/91

...... Kd