Răspunsuri

2014-09-30T20:06:44+03:00
Notam numarul necunoscut cu x si avem:
(2*x-10)*6=y
(y+5):8=22
y+5=22*8
y+5=176
y=176-5
y=171
(2*x-10)*6=y
(2*x-10)*6=171
2*x-10=171:6
2*x-10=28,5
2*x=28,5+10
2*x=38,5
x=38,5:2
x=19,25
2 4 2