2(3x+2) -5x=8 2(z-7)=3(z-2) 3x - (7 - x)= 4+ x
źródło:
2(3x+2)-5x=8
6x+4-5x=8
x=8-4
x=4
…
2(z-7)=3(z-2)
2z-14=3z-6
2z-3z=-6+14
-z=8
z=-8
3x-(7-x)=4+x
3x-7+x=4+x
4x-x=4+7
3x=11
x=\frac{11}{3}=3\frac{2}{3}