Question

Apply substitution method
For x-2y =0 and 3x+4y-20=0​

Answer 1

x-2y =0

x=2y

putting value in 3x+4y-20=0

3×2y+4y-20=0

6y+4y=20

10y=20

y=2

x=2y

x=2×2=4

x =4 and y=2

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Answer 2

Answer:

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