Răspunsuri

2014-11-10T17:23:55+02:00
A) 3(4x-11)+5(7-2x)=16-3(3x-10)12x-33+35-10x=16-9x+30
2x+2=46-9x
2x+9x=46-2
11x=44
x=44:11=4

b)7(5x-8)+6(5-3x)=28-8(3-4x)
35x-56+30-18x=28-24+32x
17x-26=4+32x
17x-32x=4+26
-15x=30
x=-30:15=-2