5(2x - 1)+3(x-1)-6(7x-12)=15(8 - x)-84;
=10x-5-3x-3-42x+72=120-15x-84
=10x+3x-42x+15x=120-84-5+3-72-14x=-28|:(-14)
x=2
2(3x+4)- 3x-2=6(2x - 3)+2(3-4x)+5(2x-3);
=6x+8-3x=12x-18+6-8x+10x-15
=-6x-3x-12x+8x-10=-18+6-15-8-11x=35|:(1)
11x=35
x=35/11
sper că te-am ajutat