1) -3*(X-2.1) = 0-3X + 6.3 = 0-3X = -6.3X = -6.3 / -3X = 2.1
2) 2.8*(X+4.5) = 02.8X + 12.6 = 02.8X = -12.6X = -12.6 / 2.8X = -4.5
Ответ: 1) X = 2.1, 2) X = -4.5
1) -3*(X-2.1) = 0
-3X + 6.3 = 0
-3X = -6.3
X = -6.3 / -3
X = 2.1
2) 2.8*(X+4.5) = 0
2.8X + 12.6 = 0
2.8X = -12.6
X = -12.6 / 2.8
X = -4.5
Ответ: 1) X = 2.1, 2) X = -4.5