Question

(x+20)×45=3105 помогите

Answer 1

(х + 20) * 45 =3105
х + 20 = 3105 :45
х + 20 = 69
х = 69 - 20
х = 49       Ответ: х= 49.

Answer 2

(Х+20)*45=3105
45х+900=3105
45х=3105-900
45Х=2205
Х=2205:45
Х=49