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4x=3x+2 9x-3=8x 6x+12=4x+20 2x+7=x+11
6x-2+x=6x+9 15=3x+9


Răspuns :

*4x=3x+2 4x-3x=2 X=2 *9x-3=8x -3 =8x-9x -3=-x X=3 *6x+12=4x+20 6x-4x = 20-8 X=8÷2 X=4 *2x+7=x+11 2x-x=11-7 X=4 *6x-2+x=6x+9 6x-6x+x= 9+2 ×=11
4x=3x+2 ; 4x-3x=2; x=2;

9x-3=8x ; 9x-8x=3; x=3.

6x+12=4x+20 ; 6x-4x=20-12; 2x=8; x=4

2x+7=x+11; 2x-x=11-7; x=4

6x-2+x=6x+9 ; 6x-6x=9+2;  0=7 ; fara solutie

15=3x+9; 3x=15-9; 3x=6; x=2