Question

afla solutiile sistemelor urmatoare ,in R folosind metoda reduceri
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Answer 1

a)2x=8 =>x=4 =>y=8

b)

4x+2y=20

x-2y=-5

__________

5x / = 15 =>x=3 =>y=4

d)

15x-3y=66

5x+3y=2

___________

20x / = 68 =>x=3,4 =>y=(-5)

e)

-x+2y=5 |×3

3x+y=-1

-3x+6y=15

3x+y=-1

___________

/ 7y=14 =>y=2 =>x=(-1)