1)2(3x-5)=7x-(2+x) 6x-10=7x-2-x 6x-10=6x-2 6x-6x=10-2 0=8 równanie sprzeczne 2)-2u+5=9-3u -2u+3u=9-5 u=4 3)5r-3=4r+2 5r-4r=2+3 r=5 4)2(5x-3)=8 10x-6=8 10x=8+6 10x=14 /:10 x=1 2/5 5)-3(x-2)=-9 -3x+6=-9 -3x=-9-6 -3x=-15 / -3 x=5 6)5(2x-3)=4(x-3) 10x-15=4x-12 10x-4x=-12+15 6x=3 / :6 x=1/2
2(3x-5)7x-(2+x) 6x-10=7x-2x-x 6x-7x+2x+x=10 2x=10 / :2 x=5 -2u+5=9-3u -2u+3u=9-5 u=4 5r-3=4r+2 5r-4r=2+3 r=5 2(5x-3)=8 10x-6=8 10x=8+6 10x=16 x=1,6 -3(x-2)=-9 -3x+6=-9 -3x=-9-6 -3x=-15 x= 5 5(2x-3)=4(x-3) 10x-15 = 4x-12 10x-4x = -12+15 6x=3 x=0,5 -(6+x)=2(x czwartych -2)+1 -6-x=2x/4 -4 +1 -x-2x/4= 6-4+1 -1,5 x= 3 x= -2 dasz naj :D ?
