Question

substitution method
3x-y-7 2x+4y=0
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Answer 1

Answer:

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Answer 2

Answer:

3x-y=7

-y=7-3x

y=3x-7........(i)

2x+4y=0

2x+4(3x-7)=0

2x+12x-28=0

14x=28

x=2

put the value of 'x' in equation (i)

y=3x-7

y=6-7

y=-1

$here \: is \: your \: answer$

$hope \: this \: helps \: you...$