Page 113 - aljaber

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[Equations With More Than One Vriable] (.)

.

( ) 3x + y = 5

. yx

. (−1, 8) . (x, y )

(15, −40)  5 , 0  (1, 2)  1 , 7  (0, 5)
3 2 2

() .

3x + y = 5 .

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