-3x=2x-10 2x-2=7-x 10=4-2x -(2x-1)=4 2(x+1)=x 2t-(3t+1)=6 -(4+x)=2(3-x) 3(y+6)-y=2(y+9) (x-7)-2(3x+5)=3

-3x=2x-10 -5x=-10/:-5 x=2 2x-2=7-x 3x=9/:3 x=3 10=4-2x 6=-2x/:-2 x=-3 -(2x-1)=4 -2x+1=4 -2x=3/:-2 x=-1,5 2(x+1)=x 2x+2=x x=-2 2t-(3t+1)=6 2t-3t-1=6 -t=7/:-1 t=-7 -(4+x)=2(3-x) -4-x=6-2x x=10 3(y+6)-y=2(y+9) 3y+18-y=2y+18 0=0 (x-7)-2(3x+5)=3 x-7-6x-10=3 -5x=20/:-5 x=-4

-3x=2x-10 / -2x -5x=-10 / :(-5) x=2 2x-2=7-x / +x +2 3x=9 / :3 x=3 10=4-2x / -4 6=-2x / :(-2) x=-3 -(2x-1)=4 / *(-1) 2x-1=-4 / +1 2x=-3 / :2 x= -3/2 (minus trzy drugie) 2(x+1)=x 2x +2=x / -2x -x=2 x=-2 2t-(3t+1)=6 2t-3t-1=6 / +1 -t=7 t=-7 -(4+x)=2(3-x) -4-x=6-2x / +x -6 -10=-x x=10 3(y+6)-y=2(y+9) 3y+18-y=2y+18 / -18 2y=2y L=P (lewa strona równa się prawej) x∈R (x należy do rzeczywistych) (x-7)-2(3x+5)=3 x-7-6x-10=3 -5x-17=3 / +17 -5x=20 / :(-5) x=-4