Question

Find the solution to the system of equations x - y = 3 and x + y = 9.

Answer 1

Answer:

x-y=3

x+y=9

2x=12

x=6

6+y=9

y=9-6

y=3

Step-by-step explanation:

Answer 2

Answer:

x-y=3

x+y=9

y=9-x

x-(9-x)=3

x-9+x=3

2x=12

x=12/2=6..

we know that x=6,

6-y=3

-y=3-6

-y=-6

y=6....

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