1. The problem is to interpret and simplify the expression 600×10³N-MM. 2. First, recognize that 600×10³N likely means 600 times 10 to the power of 3 newtons, which is $600 \times 10^3 = 600000$ newtons (N). 3. "MM" could represent an abbreviation but is unclear in a purely mathematical context; MM often stands for mega (millions), so it could imply multiplying by $10^6$. 4. If the expression is meant as $600 \times 10^3 \times 10^6$ newtons, then multiply the powers of ten: $10^3 \times 10^6 = 10^{9}$. 5. Hence, the product is $600 \times 10^{9} = 6 \times 10^{11}$ newtons. 6. If MM is not a multiplier, clarity is needed, but based on common usage, $6 \times 10^{11}$ N is a reasonable simplification. 7. Therefore, the simplified value is $$6 \times 10^{11} \text{ N}$$.