Sagot :
12-6=6
So Judy has 6 birds
So Cora and Judy have equal amounts of Birds
So Judy has 6 birds
So Cora and Judy have equal amounts of Birds
[tex]x-\ Cora\\
y-\ Judy\\\\
x+y=12\\
x+6=y\\\\
x+x+6=12\\
2x+6=12\ \ | subtract\ 6\\
2x=6\ \ \ | divide\ by\ 2\\
x=3\\
y=3+6=9\\\\
9\ birds\ belong\ to\ Judy.[/tex]