Răspunsuri

2014-10-09T20:52:09+03:00
((12-x)*3)+65=89
(36-3x)+65=89
36-3x=24
3x=12
x=4
Cel mai inteligent răspuns!
2014-10-09T20:54:41+03:00
(x-12) * 3 +65 = 89
(x-12) * 3= 89-65
(x-12) * 3 =24
x-12 =24:3
x-12=8
x=8+12
x=20
V: (20-12) * 3 +65=8 *3 + 65=24 +65=89 ;)