Thank you for sharing the image. I will extract and solve the math problems step by step. Let’s start with the solutions for Nos. 1–6, which involve solving radical equations.

1. $\sqrt{t} - 5 = 2$

• Isolate the square root term:
  $\sqrt{t} = 7$
• Square both sides:
  $t = 49$

2. $y = 5/\sqrt{y}$

• Multiply both sides by $\sqrt{y}$ (assuming $y > 0$):
  $y\sqrt{y} = 5$
• Rewrite as $\sqrt{y} = 5/y$. Square both sides: $y = 25$

3. $3x - 6\sqrt{x-1} = 3$

• Isolate the square root term:
  $6\sqrt{x-1} = 3x - 3$
• Divide through by 3:
  $2\sqrt{x-1} = x - 1$
• Square both sides:
  $4(x-1) = (x-1)^2$
• Expand and simplify:
  $4x - 4 = x^2 - 2x + 1$
  $x^2 - 6x + 5 = 0$
• Solve $x = 1$ and $x = 5$. Check for extraneous solutions.

Would you like me to continue with the remaining questions or clarify anything so far?