Răspunsuri

  • Utilizator Brainly
2014-06-01T22:34:54+03:00
[(27*a-79)*61-78]*15+340=1000
[(27*a-79)*61-78]*15=660
(27*a-79)*61-78=44
(27*a-79)*61=122   
27*a-79=2
27*a=81
a=3
2014-06-01T22:38:33+03:00
[(27a-79)*61-78]*15+340=1000

[(27a-79)*61-78]*15=1000-340

[(27a-79)*61-78]*15=660

(27a-79)*61-78=660:15

(27a-79)*61-78=44

(27a-79)*61=44+78

(27a-79)*61=122

27a-79=122:61

27a-79=2

27a=2+79

27a=81

a=81:27

a=3