10 - 2,4x =3,16 помогите

Question

10 - 2,4x =3,16 помогите

Answer 1

10 - 2,4x =3,162,4х = 10 - 3,16
2,4х = 6,84
х = 6,84 : 2,4
х = 2,85
10 - 2,4 * 2,85 = 3,16
10 - 6,84 = 3,16
3,16 = 3,16

Answer 2

10 - 2,4x =3,16
-2,4х=3,16-10
-2,4х=-6,84
х=-6,84/(-2,4)
х=2,85