zad 1 a) 5x-2=8x+6 5x-8x=6+2 -3x=8 |:(-3) x=-8/3 b) 2x-1=(5+2x)/2 |*2 2(2x-1)=5+2x 4x-2=5+2x 4x-2x=5+2 2x=7 |:7 x=7/2 zad 2 a) 2(2x-3) - 5 = 3(1+3x)+2 4x-6-5=3+9x+2 4x-11=5+9x 4x-9x=5+11 -5x=16 |:(-5) x=-16/5
Zad.1 a) 5x-2=8x+6 5x-8x=6+2 -3x=8 podzielić przez - 3 x = -[latex] frac{8}{3} [/latex] x = -2[latex] frac{2}{3} [/latex] b) 2x -1 = 5+2x wzystko razy 2 2 4x-2 = 5+2x 4x-2x=5+2 2x=7 podziel na 2 x=[latex] frac{7}{2} [/latex] x= 3[latex] frac{1}{2} [/latex] Zad.2 a) 2(2x-3) - 5 = 3(1+3x)+2 4x-6-5= 3+9x+2 4x-11=5+9x 4x-9x=5+11 - 5x=16 podzielić przez -5 x= -[latex] frac{16}{5} [/latex] x= -3[latex] frac{1}{5} [/latex]
