Prima parte
a. [tex] \frac{5-x}{2} - \frac{1-3x}{5} = 4 => 25-5x - 2+6x = 40[/tex]
23+x = 40 => x = 27
b. [tex] \frac{x-1}{2} - \frac{2x-1}{4} +2 = x+3 => 2x-2-2x+1+8=4x+12 [/tex]
7= 4x+12 => 4x = -5 => x = -5/4
c. 2x-2-3x-6=5 => -x-8 = 5 => -x= 13 =. x= -13
d. 3x+3 - 4x+8 = 6 => -x +11 = 6 => -x = -5 => x=5
e. 3x-6-12+2x = - 18 => 5x -18 = -18 => 5x= 0 => x= 0
f. x²-2x+1 - (x²-x+2x-2)+1 = 0
x²-2x+1-x²-x+2+1 = 0 => -3x=-4 => x= 4/3
A doua parte
a. [tex]2- \frac{x}{2} = \frac{3+x}{2} + 4 => 8-2x= 6+2x+4[/tex] =>-2=4x => x = -1/2
b. 24x-x-1 = 2x-1 => 21x = 0 => x= 0
c. 16x+2 - 3x-3 = - 9x + 9 => 22x = 10 => x = 5/11
d. [tex]1+ \frac{2x-1}{3} - \frac{19}{9} = \frac{37}{18} => 18+12x-6-38=37[/tex]
12x = 63 => x = 63/12 = 21/4
e. 6x+6 +4x+8+3x+9 = 0 => 13x = 23 => x = 23/13
f. 7x/6 - (5x+10)/2 = 5x-9
7x - 15x-30 = 30x -54 => 24=38x => x = 24/38 = 12/19
