Răspuns :
Răspuns:
9(x-3)-4(7-3x)=5-3x
9x-27-28+12x=5-3x
21x+3x=5+55
24x=60
12x=30
6x=15
2x=5
x=5/2
x=2,5
Răspuns:
Elimini parantezele:
9x-27-28+12x=5-3x
Redu termenii asemenea:
9x+12x=21x
-27-28=-55
21x-55=5-3x
Muta termenii:
21x+3x=5+55
24x=60
x=60/24
Simplifica fractia prin 13
x=5/2