Question

Va rog ex.3 repede !
DAU COROANA!!

Answer 1

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