Répondre :
a)(4/5) - x+(4/3 )= 2.(2x-1) /5
(12-15x+20)/15=6(2x-1)/15
32-15x=12x-6
38=27x
x=38/27
b)
(4-4/5) : 1/3= 1/4-1/x
((20-4)/5)(3/1)= (x-4)/4x
48/5= (x-4)/4x
192x=5x-20
187x=-20
x=-20/187
a)(4/5) - x+(4/3 )= 2.(2x-1) /5
(12-15x+20)/15=6(2x-1)/15
32-15x=12x-6
38=27x
x=38/27
b)
(4-4/5) : 1/3= 1/4-1/x
((20-4)/5)(3/1)= (x-4)/4x
48/5= (x-4)/4x
192x=5x-20
187x=-20
x=-20/187