3x-21-4x-8=7
-x=7+21+8
-x=36
x=-36
5-3x+27=5x+20
8x=32-20
x=12/8
x=3/2 (am obtinut alta solutie, verifica daca ai scris corect exercitiul)
5x+10=2x-2
3x=-12
x=-4
3x+5=-2x+10
5x=5
x=1
6x-2=6x+9-11
-11=-11 S=R
5x+3x-6=6x+6+2x
8x-6=8x+6
-6=+6 S=multime vida
3x+9x-18=12x-12-6
12x-18=12x-18
-18=-18 S=R
(2x+1)/(2x+2)=(2x+3)/(2x+4)
(2x+1)(2x+4)=(2x+3)(2x+2)
4x²+2x+8x+4=4x²+6x+4x+6
10x+4=10x+6
4=6 S=multime vida
