В) 630: (63x-42x) + 53=68

Question

В) 630: (63x-42x) + 53=68

Answer 1

630:(63х-42×)+53=68 630:21×+53=68 630:21×=68-53 630:21×=15 21×=630:15 21×=42 Х=42:21 ×=2