Question

solve y-x+2=0 and x-2y-4=0​

Answer 1

Answer: x=0 y= -2

Step-by-step explanation:

y-x+2=0  ---1

x-2y-4=0 ---2

from 1

y=x-2

substituting in 2

x-2(x-2)-4=0

x-2x+4-4=0

x=0

y=-2

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Answer 2

Step-by-step explanation:

• first add two equations;
• i.e,y-x+2+x-2y-4=0+0
• so, y-2=0
• so, y=2
• then y-x+2=0
• 2-x+2=0
• x-4=0
• so. x=4