Question

aflați x din proportiile a)4x-3/3=3x+6/5
b)0,(5)/x=3/0,(2)

Answer 1

a) (4x-3)/3 = (3x+6)/5
    5(4x-3) = 3(3x+6)
    20x - 15 = 9x + 18
    20x - 9x = 18 + 15
    11x = 33
    x = 33:11
    x = 3

b) 0,(5)/x = 3/0,(2)
   3x = 0,(5) * 0,(2)
   3x = 5/9 * 2/9
   3x = 10/81
   x = 10/81 : 3 = 10/81 x 1/3
   x = 10/243

Answer 2

a)x=4 pe 3
b)x=3:3
. x=1
c)3x=6+5
3x=11
x=3 pe 11