a) 0,5(2-4x)=3-x b)0=3-(2x+1) c)2(u-5)+15=3(u-4)+10

a)0,5(2-4x)=3-x 1-2x=3-x -2x+x=3-1 -x=2 x=-2 b)0=3-(2x+1) 0=3-2x-1 2x=3-1 2x=2/:2 x=1 c)2(u-5)+15=3(u-4)+10 2u-10+15=3u-12+10 2u-3u=10-15-12+10 -u=-7 u=7

a)1-2x=3-x 1-3=-x+2x -2=x x=-2 b)0=3(-2x-1) 0=-6x-3 -3=-6x/:-6 0,5=x x=0,5 c)2u-10+15=3u-12+10 2u-3u=-12+10+10-15 -u=-7/:(-1) u=7 Licze na 6

a) 0,5(2-4x)=3-x 1-2x=3-x -2=x b)0=3-(2x+1) 0=3-2x-1 -2=-2x |:(-2) 1=x c)2(u-5)+15=3(u-4)+10 2u-10+15=3u-12+10 -u=-7 |:(-1) u=7

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