1) 2.3x = 46x = 46 / 2.3x = 20
2) 5.5x = 3x - 105.5x - 3x = -102.5x = -10x = -10 / 2.5x = -4
3) (у + 3) (3y - 6) = 0y + 3 = 0 или 3y - 6 = 0y = -3 или 3y = 6y = -3 или y = 2
4) x^2 = 81x = √81x = 9 or x = -9
1) 2.3x = 46
x = 46 / 2.3
x = 20
2) 5.5x = 3x - 10
5.5x - 3x = -10
2.5x = -10
x = -10 / 2.5
x = -4
3) (у + 3) (3y - 6) = 0
y + 3 = 0 или 3y - 6 = 0
y = -3 или 3y = 6
y = -3 или y = 2
4) x^2 = 81
x = √81
x = 9 or x = -9