Question

X+y=0 ; 2x-y=1
Solve this in sum elimination method

Answer 1

Answer:

Here you go!

Step-by-step explanation:

X+y=0

2x-y=1

3x=1

x=1/3

Substituting the value of X in any equation

2(1/3)-y=1

2/3-y=1

-y= 1-2/3

Taking LCM

So:

-y= 3-2/3

-y= 1/3

y= -1/3

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Answer 2

x+y=0 —(1)

2x-y=1 — (2)

from 1

x = -y — (3)

sub in eq(2)

2x -y =1

from eq(3)

2x+x=1

=》x=1/3

=》y=(-1/3)

HOPE THIS ANSWER HELPS YOU