Помогите решить заранее спасибо (7/15-3/40-1/24)):0,7 :( 2,4 *1/3-3)*5/11. * 1,5/6:(3/4-1,2/3) :(4/9-5/12+0,75)* 3/7

(7/15 - 3/40 - 1/24) : 0,7 : (2,4 * 1/3 - 3) * 5/11 - 1 5/6 : (3/4 - 1 2/3) : (4/9 - 5/12 + 0,75) * 3/7 = (7/15 - 3/40 - 1/24) : 7/10 : (24/10 * 1/3 - 3/1) * 5/11 - 11/6 : (3/4 - 5/3) : (4/9 - 5/12 + 75/100) * 3/7 = ((56-9-5)/120) * 10/7 : (8/10 - 3/1) * 5/11 - 11/6 : (3/4 - 5/3) : (4/9 - 5/12 + 75/100) * 3/7 = 42/120 * 10/7 : (-22/10) * 5/11 - 11/6 : (-11/12) : (1/36 + 75/100) * 3/7 = 42/120 * 10/7 : (-22/10) * 5/11 - 11/6 * (-12/11) : 14/18 * 3/7 = 6/10 * (-10/22) * 5/11 - 11/6 * (-12/11) * 18/14 * 3/7 = -3/11 * 5/11 - 11/6 *( - 12/11) * 18/14 * 3/7 = -15/121 + 2 * 18/14 * 3/7 = -15/121 + 18/7 * 3/7 = -15/121 + 54/49 = (-735+6534)/5929 = 5799/5929