600-120+x×120=600 ??????

Question

600-120+x×120=600 ??????

Answer 1

600 - 120 + х * 120 = 600
480 + 120х = 600
120х = 600 - 480
120х = 120
х = 120 : 120
х = 1

проверка:
600 - 120 + 1 * 120 = 600
600 - 120 + 120 = 600
600 = 600