I need urgent help with this. please write out the working and the answer thank you

C = ⁵/₉F - 32
9C = 9(⁵/₉F - 32)
  9C = 9(⁵/₉F) - 9(32)
  9C = 5F - 288
- 5F - 5F
  9C - 5F = -288
- 9C   - 9C
-5F = -9C - 288
-5 -5
F = 1⁴/₅C + 57.6

2. \(H = w + \frac{50}{m^{2}}\)
  \(m^{2}(H) = m^{2}(\frac{50}{m^{2}})\)
  \(Hm^{2} = 50\)
  \(\frac{Hm^{2}}{H} = \frac{50}{H}\)
  \(m^{2} = \frac{50}{H}\)
  \(\sqrt{m^{2}} = \sqrt{\frac{50}{H}}\)
  \(m = \frac{\sqrt{50}}{\sqrt{H}}\)
  \(m = \frac{5\sqrt{2}}{\sqrt{H}}\)
  \(m = \frac{5\sqrt{2}}{\sqrt{H}} * \frac{\sqrt{H}}{\sqrt{H}}\)
  \(m = \frac{5\sqrt{2H}}{H}\)

3. A = 5 + 4√x
- 5 - 5
  A - 5 = 4√x
  (A - 5)² = (4√x)²
  A² - 10A + 25 = 16x
16 16
¹/₆A² - ⁵/₈A + 1⁹/₁₆ = x

4. \(A = \frac{b + c}{b}\)
  \(Ab = b(\frac{b + c}{b})\)
  \(Ab = b + c\)
  \(Ab - b = c\)
  \(b(A) - b(1) = c\)
  \(b(A - 1) = c\)
  \(\frac{b(A - 1)}{A - 1} = \frac{c}{A - 1}\)
  \(b = \frac{c}{A - 1}\)