Answer :

Sure! Let's tackle this problem step-by-step.

### Step 1: Identify the numbers

We have three numbers:
- \(-1857\)
- \(-2144\)
- \(-8121\)

### Step 2: Sum the first two numbers

First, we need to add \(-1857\) and \(-2144\).

[tex]\[ -1857 + (-2144) \][/tex]

Adding these numbers together, we get:

[tex]\[ -1857 + (-2144) = -4001 \][/tex]

So, the sum of \(-1857\) and \(-2144\) is \(-4001\).

### Step 3: Subtract this sum from the third number

Now, we need to subtract this sum from \(-8121\):

[tex]\[ -8121 - (-4001) \][/tex]

Subtracting a negative number is the same as adding its positive equivalent:

[tex]\[ -8121 - (-4001) = -8121 + 4001 \][/tex]

Performing the addition, we get:

[tex]\[ -8121 + 4001 = -4120 \][/tex]

### Final Result

So, the final result is:

[tex]\[ -4120 \][/tex]

Therefore, the result of subtracting the sum of [tex]\(-1857\)[/tex] and [tex]\(-2144\)[/tex] from [tex]\(-8121\)[/tex] is [tex]\(-4120\)[/tex].