Question

(31 * 550 - х) * 120 равно 10200

Answer 1

( 31 *550 -х) *120 =10 200

31* 550-х =10 200 :120

17 050 - х=85

х =17 050 - 85 

х =16 965

проверка :

( 31 * 550 - 16 965 )* 120 =10 200

 

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Answer 2

(31*550-х)*120=10200

17050-х=10200:120

17050-х=85

х=17050-85

х=16965

ОТВЕТ:16965