Final answer:
The difference (3-4x)-3(2.4x-7) simplifies to -11.2x + 24 by distributing the -3, simplifying the multiplication, and then combining like terms.
Step-by-step explanation:
To find the difference (3-4x)-3(2.4x-7), we will distribute the -3 into the parentheses and then combine like terms. Let's do this step by step:
- Distribute the -3: (3-4x) -3×2.4x +3×7
- Simplify the multiplication: (3-4x) -7.2x + 21
- Combine like terms: -4x - 7.2x and 3 + 21
- The result of combining like terms is: -11.2x + 24
The difference is -11.2x + 24.