Can someone help me this question please. I don't understand it.

Answer:
17th term
Step-by-step explanation:
For some nth term, both series have same term. So,
6n - 21 = 4n + 13
Subtract 4n from both sides
6n - 4n - 21 = 13
2n - 21 = 13
Add 21 to both sides
2n = 13+21
2n = 34
Divide both sides by 2
n = 34/2
n = 17
Check:
6n - 21 = 6*17 - 21 = 102 - 21 = 81
4n + 13 = 4*17 + 13 = 68 + 13 = 81
17th term both the series is 81
Answer:
The answer is n = 17
Step-by-step explanation:
You first have to substitute a number for n. You put in a number and calculate. If the 2 are not equal, then it is not correct. When you substitute 17,
4(17) + 13 = 81. 6(17) - 21 = 81.
Because of this, 17 would be the correct term for n.