The following are equations found in the image: 1. $$4(2a-1)-3 = ?$$ 2. $$6a^5 - 4a^4 = 2$$ 3. $$\frac{(7^2)^3}{7^2} - 7^4 = ?$$

Here are the answers to the equations found in the image:

• 1. $$4(2a-1)-3 = 8a - 4 - 3 = 8a - 7$$
• 2. This equation appears to be $$6a^5 - 4a^4 = 2$$. Without further context or instructions, it's difficult to provide a simplified answer.
• 3. $$\frac{(7^2)^3}{7^2} - 7^4 = \frac{7^{2 \times 3}}{7^2} - 7^4 = \frac{7^6}{7^2} - 7^4 = 7^{6-2} - 7^4 = 7^4 - 7^4 = 0$$