it's part of a pyramid excersise and i'm a bit confused

Combining like terms will result in (2s+s) + (3t+7t) = 3s + 10t. Beware of trying to combine different terms such as s and s^2 (s squared) or terms such as 3ab and 3b.

it's part of a pyramid excersise and i'm a bit confused

Tutors, please sign in to answer this question.

Silver Spring, MD

West Des Moines, IA

Hi, Annabelle! Just combine the "like terms" -- in this case, combine the every term with an "s" (so...2s + s, which would give you 3s), then combine the terms with a "t" (so you would add the 3t and the 7t, giving you 10t). Your answer would be 3s + 10t.

Hope this helps!

p.s. Here's one for you to try yourself: What is the answer to 10a + 18b + a + 20b?

Christopher A.

Tutor Expert in ACT, SAT, Math, Writing, Excel, Study Skills and More

Far Rockaway, NY

5.0
(613 ratings)

Tara W.

High school physics & engineering teacher, 17 yrs experience

New York, NY

5.0
(16 ratings)

Sean B.

Premier NYC Math tutor - young, passionate and talented

New York, NY

4.8
(30 ratings)

- Math 9412
- Algebra 1 3951
- Algebra 2 3301
- Word Problem 4960
- Math Help 5221
- Algebra Help 953
- Algebra Word Problem 2417
- College Algebra 1049
- Word Problems 1448
- Equations 688