need help breaking down these problems

9. Micah has 74 feet of fencing to make a rectangular dog pen in his yard. He wants the length to be 25 feet more than the width. Find the length, L, by solving the equation 2L + 2(L -25) = 74 (2 pts.) 8.4 Solve Equations with Fractions or Decimal Coefficients 10. Solve the equations by clearing the fractions or decimals. (4 pts. ) a. n n 2 -n = - 2 b. 1.2 x - 0.91 = 0.8 x + 2.29