For the regular sequence 1, 2, 3, ...,

, then sum is

If we multiply each number by 7 (7, 14, 21, ...), then the sum is

and if we add 1 to each number (8, 15, 22, ...) then the sum is

We have

terms, so the sum is:




Answer:
There are no solutions.
Step-by-step explanation:
Let's solve your inequality step-by-step.
−7(3x−7)+21x≥50
Answer:
0.6
Step-by-step explanation:
6x - 3 = x + 7
6x + 3 = x + 3
6x = x + 10
6x = 10
6 ÷ 10 = 0.6
x = 0.6
You need to use recursive sequence for this one