stable equation

15 LETTERS · STARTS WITH S

stable equation is a valid 15-letter word worth 25 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1T1A1B3L1E1E1Q10U1A1T1I1O1N1

1 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 10 + 1 + 1 + 1 + 1 + 1 + 1 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does stable equation mean?