a) 4 + 375 . (9/16 : 125/64 : -27/8)

b) 2/3 - 4 . ( 1/2 + 3/4)

c) ( 12/35 - 6/7 + 18/14) : 6=-7 - -2/5

D) [ -54/64 - (1/9 : 8/27 ) : -1/3] : -81/128

a) -1,5 + 15/2 . x = 3/4

b) 5/8 + 1/4 . ( 2.x - 1) = 5/4

c)( 0,5 . x - 3/7) : 1/2 = 1 1/7

d) 1/2x + 1/2 ( x -2) = 3/4 - 2x

e) ( 3/7x - 7/5) . ( 6 - 9/10x) = 0

GIÚP MÌNH VỚIII

a) 2x - 1/3 = -4/9

b) 4/3 - 5/3x = -1/2

c) 2x - 3 = x + 1/2

d) 2/3x - 2/5 = 1/2x - 1/3

e)1 2/3x - 1/4 = 5/6
 

a) 1/2 - 2/3 - 1/8 : (-1/2)

d) 27 . (-1/3)^2 - (-0,2)^2 : 1/25

c) 73/2 - [ 6,5 - (1/4 : 1/2)^2

d) -1,75 - (-1/9 - 2 1/8)

e)( 5 1/3 + 13/7 + 5/4) - (1/3 -1/7 + 25%)