Question

реши уравнение 147a-49=(9+26)×7

Answer 1

147а-49=35×7
147а-49=245
147а=245+49
147а=294
а=2

Answer 2

9+26=35
147a-49=7(21a-7)
7*(21a-7)=35*7
21a-7=35
21a=35+7
21a=42
а=2