Question

Tìm x:

5|-3x-3|=4|3x+3|-18:(-3)

Answer 1

5|-3x - 3| = 4|3x + 3| - 18 : (-3)

5(3x + 3) = 4(3x + 3) + 6

15x + 15 = 12x + 12 + 6

15x - 12x = 18 - 15

3x = 3

x = 1

Answer 2

5|-3x-3|=4|3x+3|-18:(-3)

= 5 . 3x - 3 = 4 . 3x + 3 - (-6)

= 15x - 3 = 12x + 9

= 15x - 12x = 3 + 9

3x = 12

x = 12 : 3

x = 4