Răspuns :
2X-7X+3(5-4X-2X+6)
2X-7X+15-12X-6X+18=
2X-7X+15+18X+18=
2X-11X+33=
-9X+33
2X-7X+15-12X-6X+18=
2X-7X+15+18X+18=
2X-11X+33=
-9X+33
2x-7x+3[5-4x-2(x+3)]
2x-7x+3 (5-4x-2x+6)
2x-7x+3( 11-6x)
2x-7x+33-18x
-23x+33
2x-7x+3 (5-4x-2x+6)
2x-7x+3( 11-6x)
2x-7x+33-18x
-23x+33