"My mother's grandmother is my..."
The sentence is missing the last word, which would be "grand-mère" (grandmother).
So the full sentence is:
"La grand-mère de ma mère est mon grand-mère."
This means: "My mother's grandmother is my grandmother."
"My mother's grandmother is my..."
The sentence is missing the last word, which would be "grand-mère" (grandmother).
So the full sentence is:
"La grand-mère de ma mère est mon grand-mère."
This means: "My mother's grandmother is my grandmother."