(148-m)•31=1581 решите

Question

(148-m)•31=1581 решите

Answer 1

4588 - 31m = 1581
-31m = 1581 - 4588
-31m = -3007
m = 3007/31
m=97

Answer 2

(148-m)*31=1581
148-m=1581/31
148-m=51
m=148-51
m=97
(148-97)*31=1581
1581=1581