Question

Elemintion method 7u-2v=5,8u+7v=15

Answer 1

7u-2v=5..........1

8u+7v=15..........2

multiply eq1 ×7 and eq2 ×2

49u -14v =35.........3

16u+14v = 30..........4

add eq3 and eq4

65u= 65

u= 1

put u in v

7×1 -2v=5

-2v = 5-7

-2v = -2

v= 1

hence v=1 and u=1

Answer 2

Step-by-step explanation:

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