Question

Nu inteleg cum se face:5(x-3)la patrat-(2x-3)la patrat+x+3=4(x-2)la patrat-3(1-x)la patrat+5.Dau coronitza...please

Answer 1

5(xpatrat-6x+9)-(4xpatrat-12x+9)+x+3=4(xpatrat-4x+4)-3(1-2x+xpatrat)+5
sau   5xpatrat-30x+45-4xpatrat+12x-9+x+3=4xpatrat-16x+16-3+6x-3xpatrat+5
sau xpatrat-17x+39=xpatrat-10x+18(observam ca xpatrat se reduce!)
sau   -17x+10x=18-39,   -7x=-21, deci x=21:7=3