Răspunsuri

2014-04-15T17:03:20+03:00
X- suma de bani
x-x/4=A - rest
A-2A/3=9. Amplificam cu 3 pt a avea aceelasi numitor

32A-2A=27
A=27

X-x/4=27. Amplif cu 4 pt a avea ac numitor
4x-x=108
3x=108
x=36

2014-04-15T17:04:18+03:00
X- suma de bani
1/4 din x= 1/4*x = x/4-cartea
x-x/4 =  4x-x/4  =3x/4-restul

2/3 din 3x/4= 2/3 *3x/4=x/2-dictionarul

x/4 +x/2+9=x   aducem la acelasi numitor
x+2x +36=4x
3x-4x=-36
-x=-36
x=36