a) 9,5x - (3,2x + 1,8x) + 3,75 = 6,99,5x - 5x + 3,75 = 6,94,5x + 3,75 = 6,94,5x = 3,15x = 3,15 / 4,5x = 0,7
Ответ: x = 0,7.
a) 9,5x - (3,2x + 1,8x) + 3,75 = 6,9
9,5x - 5x + 3,75 = 6,9
4,5x + 3,75 = 6,9
4,5x = 3,15
x = 3,15 / 4,5
x = 0,7
Ответ: x = 0,7.