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![ROBERT BUTLER](https://secure.gravatar.com/avatar/7081bd1a83d5209e4752ffe369adad96?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
ROBERT BUTLER
2,010 Pointslet greeting = 'Hi'; greeting __ ', Treehouse students!';
let greeting = 'Hi'; greeting __', Treehouse students!';
2 Answers
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Brandon White
Full Stack JavaScript Techdegree Graduate 34,662 PointsHi Robert,
The operator you’d use for that question is the plus-equal operator. It looks like this: +=
![ROBERT BUTLER](https://secure.gravatar.com/avatar/7081bd1a83d5209e4752ffe369adad96?s=96&d=https%3A%2F%2Fecs-static.teamtreehouse.com%2Fassets%2Fcontent%2Fdefault_avatar-445fbbabfc8dc9188fb5967fe43322ee0c3e0dd1e10f378bf8343784af5a13eb.webp&r=pg)
ROBERT BUTLER
2,010 Pointslet greeting = 'Hi'; greeting + ', Treehouse students!';