"X" TO NIEWIADOMA

a- 3 (2x-1 )= 9
b- 4 (x-3) = 5 (2-x)
c- 6 (x-1) - 2 (x-3) = 4
d- 7 (x+4) - (3x-1)= 5
e- [tex]\frac{x-1}{2}[/tex] = [tex]\frac{3x+1}{4}[/tex]
f-
g-
h-