Question

Помогите решить))
1)(х-1)^2=(14-х)^2
2)5х-4=4-3(5-2х)
3)-5х=5х-6

Answer 1

1)(x^2 - 1) = (14 - x^2) x^2 - 2x + 1 = 196 - 28x + x^2 x^2 - x^2 - 2x + 28x - 196 +1=0 26x = 195 x = 7,5 2) 5x - 4 = 4 - 3(5 - 2x) 5x - 4 = 4 - 15 + 6x 5x - 6x - 4 - 4 + 15 = 0 -x + 7 = 0 -x = -7 x = 7 3) -5x = 5x - 6 -5x - 5x = -6 -10x = -6 x = 0,6