Yes, equate is a Scrabble word!
...and is worth 15 points in Scrabble, and 16 points in Words with Friends
equate
Verb
1. Consider or describe as similar, equal, or analogous
2. Be equivalent or parallel, in mathematics
3. Make equal, uniform, corresponding, or matching
What Scrabble words can I make with the letters in equate?
5 Letter Words
3 Letter Words
2 Letter Words