a) 2/3 - 2/3 * (7x-3)/2 = x
2/3 - 1/3*(7x-3) = x
2/3 - 7x/3 + 3/3 = x
5/3 - 7x/3 = x amplifici pe x cu 3 pt a scapa astfel de numitori
5- 7x = 3x
-7x -3x = -5
-10x = -5
x = -5/-10 = 1/2
c) sunt doua solutii
prima : 2x-3/2 = 1/2
2x = 1/2 + 3/2
2x = 2
x = 2/2 = 1
a doua : 2x-3/2 = -1/2
2x = -1/2+ 3/2
2x = 2/2
x = 1/2
deci solutiile sunt 1 si 1/2
