Question

X-y=6 and x=y-2; solve by substitution

Answer 1

Answer: No Solution

Step-by-step explanation: You plug in x=y-2 into x-y=6. So the problem would be rearranged into (y-2)-y=6. When done correctly the y's cancel out making it a no solution.

Answer 2

The solution is  

x

=

4

,

y

=

2

Explanation:

x

+

y

=

6

....equation  

1

x

−

y

=

2

.......equation  

2

Solving by elimination.

Adding equations  

1

and  

2

x

+

y

=

6

x

−

y

=

2

2

x

=

8

x

=

4

Finding  

y

by substituting  

x

in equation  

1

x

+

y

=

6

y

=

6

−

x

y

=

6

−

4

y

=

2Step-by-step explanation: