Question

Решите уравнение a)-8 x +15=-4x+16 б)5/6x+7=5/9x-5

Answer 1

a) -8x +15 = -4x +16
-8x +4x =16 -15
-4x =1
x = -1/4
x = -0.25

b) 5(9x-5) =5(6x+7)
45x -25 =30x +35
45x -30x =35 +25
15x =60
x =4

Answer 2

15x +648x² =0

Answer 3

x(15 +648x) =0, x1 =0

Answer 4

15 +648x =0, 648x = -15, x = -15/648. x =-5/216

Answer 5

спасибо

Answer 6

пожалуйста