–21 + x
Explanation:
Step 1: Given expression: –4 + (–17) + x
Step 2: In the algebraic property, positive × negative = negative
So, –4 + (–17) + x = –4 – 17 + x
Step 3: Add two negative numbers, the result will be sum with minus sign
–4 – 17 + x = –21 + x
Hence, –21 + x is the required equation.
