Решите уравнение 7.43-1.28x=1.42x+5

7.43 + -1.28x = 1.42x + 5    7.43 + -1.28x = 5 + 1.42x  7.43 + -1.28x = 5 + 1.42x 7.43 + -1.28x + -1.42x = 5 + 1.42x + -1.42x -1.28x + -1.42x = -2.7x 7.43 + -2.7x = 5 + 1.42x + -1.42x 1.42x + -1.42x = 0.00 7.43 + -2.7x = 5 + 0.00 7.43 + -2.7x = 5  7.43 + -7.43 + -2.7x = 5 + -7.43  7.43 + -7.43 = 0.00 0.00 + -2.7x = 5 + -7.43 -2.7x = 5 + -7.43  x = 0.9

7,43 - 1,28x = 1,42x + 5 7,43 - 5 = (1,42 + 1,28)x 2,43 = 2,7x x = 2,43 : 2,7 х = 0,9 Проверка: 7,43 - 1,28*0,9 = 1,42*0,9 + 5                       7,43 - 1,152 = 1,278 + 5                               6,278 = 6,278 Ответ: {0,9}