Question

coroana jurrr !!! AJUTORRR

Answer 1

a) (2x + 3) x 1,(3) = (10/3)²
    (2x + 3) x 12/9 = 100/9
    2x + 3 = 100/9 : 12/9 = 100/9 x 9/12 = 100/12
    2x = 100/12 - 3/1 = 100/12 - 36/12 = 64/12
    x = 64/12 : 2/1 = 64/12 : 1/2 = 64/6
b) (x + 1) : 7/4 = 4/7
    x + 1 = 4/7 x 7/4 = 1/1
    x = 1/1 - 1/1 = 0
c) (x + 0,25 + 1/2) : 475/100 = 35/100 + 1/2 x 1/10
(x + 0,75) x 100/475 = 35/100 + 1/20
(x + 0,75) x 4/19 = 40/100
x + 0,75 = 4/10 : 4/19 = 4/10 x 19/4 = 19/10
x + 75/100 = 19/10
x + 3/4 = 19/10 => x = 19/10 - 3/4 = 38/20 - 15/20 = 13/20

Answer 2

,sper sa te ajute........