Решите уравнение: -4,8(2 - х) = 2,3х – 17,1 (3,7 - х)(5х + 15) = 0
Это система или 2 разных задания?
-4,8(2 - х) = 2,3х – 17,1 -9,6 + 4,8x = 2,3x - 17,1 2,5x = - 7,5 x = - 3 (3,7 - х)(5х + 15) = 0 3,7 - x = 0 5x + 15 = 0 x = 3,7 x = - 3
-4.8(2 - x) = 2.3x - 17.1 -9.6 + 4.8x - 2.3x = -17.1 2.5x = -17.1 + 9.6 2.5x = -7.5 x = -7.5/2.5 x = -3 (3.7 - x)(5x + 15) = 0 1) 3.7 - x = 0 X1 = 3.7 2) 5x + 15 = 0 5x = -15 x = -15/5 X2 = -3