Întrebare
[(7*a-79)*9-1880]*2+10=2010
Întrebare a fost pusă de: USER3166
93 Vezi
93 Răspunsuri
Răspuns (93)
[(7*a-79)*9-1880]*2+10=2010
[(7*a-79)*9-1880]*2=2000
(7*a-79)*9-1880=1000
(7*a-79)*9=2880
7*a-79=320
7*a=399
a=57
[(7*a-79)*9-1880]*2=2000
(7*a-79)*9-1880=1000
(7*a-79)*9=2880
7*a-79=320
7*a=399
a=57
[(7a-79)*9-1880]*2=2010-10
[(7a-79)*9-1880]*2=2000
(7a-79)*9-1880=2000:2
(7a-79)*9-1880=1 000
(7a-79)*9=1000+1880
(7a-79)*9=2880
(7a-79)=2880:9
7a-79=320
7a=320+79
7a=399
a=399:7
a=57
[(7a-79)*9-1880]*2=2000
(7a-79)*9-1880=2000:2
(7a-79)*9-1880=1 000
(7a-79)*9=1000+1880
(7a-79)*9=2880
(7a-79)=2880:9
7a-79=320
7a=320+79
7a=399
a=399:7
a=57