Answer:
a is equal to x + 3
Step-by-step explanation:
Arithmetic Sequences
The arithmetic sequences are identified because any term n is obtained by adding or subtracting a fixed number to the previous term. That number is called the common difference.
We are given the sequence:
a, 3x+2, b
And the common difference is 2x-1
Subtracting the second and the first terms:
3x + 2 - a
We can find the common difference since it's given:
3x + 2 - a = 2x - 1
Solving for a:
- a = -3x - 2 + 2x - 1
- a = -x - 3
a = x + 3
a is equal to x + 3
