Solve the Arithmetic Sequence: 7 + 2 + 1 - 4

To solve the expression $7+2+1-4$, follow these steps:

Step 1: Add the first two numbers: $7 + 2 = 9$.

Step 2: Add the next number to the result: $9 + 1 = 10$.

Step 3: Subtract the last number from the result: $10-4=6$.

Therefore, the answer is $6$.