А) -48*4050+1120*109+82435 б) (420,076-385,8) : 3,8-81,98 в) 34,75*18,6-34,75*(-3,9)-18,5*34,75 г) -(3,5*4/7-3,5:1 целая 3/4)+(1,02-100)

A)−48×4050+ 120× 09+82435=10115 Б) (420,076-385,8) : 3,8-81,98=-72,98 В)4,75*18,6-34,75*(-3,9)-18,5*34,75=-419 Г) Я не понял:(.

– 48 * 4050 + 1120 * 109 + 82435 = 10115 - 48*4050= - 194400 1120 * 109 = 122080 - 194400 + 122080 = - 72320 - 72320 + 82435 = 10115 (420,076 – 385,8) / 3,8 – 81,98 =  – 72,96 420,076 - 385,8 = 34,276 34,276 / 3,8 = 9,02 9,02 - 81,98 = - 72,96 34,75 * 18,6 – 34,75 * ( – 3,9) – 18,5 * 34,75 = 139 34,75*18,6=646,35 34,75*(- 3,9)=- 135,525 18,5*34,75=642,875 646,35-(- 135,525)=781,875 781,875-642,875=139 - (3.5 * 4/7 - 3.5 : 1 3/4) + (1.02 + 100) = = - (2 - 3.5 : 1 3/4) + (1.02 + 100) = - (2 - 2) + (1.02 + 100) = = - (0) + (1.02 + 100) = - (0) + (5051/50) = 5051/50 = = 101 1/50 = 101.02