a. 2x+8 -1,5(x+5) = x+10

b. \frac{x+4}{7} - \frac{5}{2} = \frac{x-9}{2} 

c. \frac{5x-7}{2} - \frac{2x+7}{3} = 3x - 14

d. \frac{3x+1}{5} - \frac{x-6}{2} = \frac{2x+5}{5} + \frac{16}{5}