The sum of the first six term of an arithmetic progression is 21 and the 7th term is three time the sum of the third and fourth term find the first term and the common difference.
 👍
 👎
 👁
 ℹ️
 🚩
3 answers

 👍
 👎
 ℹ️
 🚩

 👍
 👎
 ℹ️
 🚩

 👍
 👎
 ℹ️
 🚩
Answer this Question
Related Questions
Still need help?
You can ask a new question or browse existing questions.