Question

prove that the pair of linear equation x -2y=0 and 3 X + 4 Y = 20 has only one solution​

Answer 1

Answer:

Step-by-step explanation:

X-2y=0. ×2

3x+4y=20.  ×1

2x-4y=0

3x+4y=20

5x=20

X=20/5

X=4

Put X=4 in x-2y=0

4-2y=0

-2y=0-4

y=-4/-2

y=1

Answer 2

Answer:

X=4

y=2

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