a) -3x = 2x-10 -3x - 2x = -10 -5x = -10 / :(-5) x = 2 c) 10 =4-2x 4-2x = 10 -2x = 10 - 4 -2x = 6 / : (-2) x = -3 d) -(2x-1) =4 -2x + 1 = 4 -2x = 4 -1 -2x = 3 /: (-2) x = -3/2 x = -1 i 1/2 g) -(4+x) = 2(3-x) -4 - x = 6 - 2x -x + 2x = 6 + 4 x = 10 h) 3(y+6) -y= 2(y+9) 3y + 18 -y = 2y + 18 2y - 2y = 18 - 18 0 = 0
a) -3x = 2x-10 10=2x+3x 10=5x 2=x c) 10 =4-2x 10-4=-2x 6=-2x -3=x d) -(2x-1) =4 -2x+1=4 -2x=4-1 -2x=3 x=-1,5 g) -(4+x) = 2(3-x) -4-x=6-2x -x+2x=6+4 x=10 h) 3(y+6) -y= 2(y+9) 3y+18-y=2y+18 2y+18=2y+18 2y-2y=18-18 0=0
a) -3x= 2x - 10 -3x-2x=-10 -5x=-10 /*(-1) 5x=10 x=2 c) 10 = 4 - 2x 2x=4-10 2x=-6 x=-3 d) -(2x-1) =4 -2x + 1 = 4 -2x = 4 -1 -2x = 3 /: (-2) x = -3/2 x = -1 i 1/2 g) -(4+x) = 2(3-x) -4 - x = 6 - 2x -x + 2x = 6 + 4 x = 10 h) 3(y+6) -y= 2(y+9) 3y+18-y=2y+18 3y-y-2y=18-18 0=0
