Question

Rezolvati Ecuatiile :
a)1/2x - 1/4 =3/8
b) (2/3-x) : (-1/2) = -1/3
c) (x-5/4) x (-2/3) = 1/2
d) ( 1/2x - 4/5) ori 5/2 = 3/2

Answer 1

Răspuns:

Explicație pas cu pas:

a)1/2x - 1/4 =3/8      4x-2=3      4x=5      x=5/4

b) (2/3-x) : (-1/2) = -1/3       2/3-x=1/6   4-6x=1       6x=3    x=1/2

c) (x-5/4) x (-2/3) = 1/2     x-5/4=-1/3       12x-15=-4      12x=11       x=11/12

d) ( 1/2x - 4/5) × 5/2 = 3/2      1/2 x-4/5=3/5    1/2x=7/5     x=14/5