Question

resolva no conjunto dos números reais as equações
a)27/2×-1=9×+1
b)5/2×-1=1/6
c)27/3-×=1/81×

Answer 1

Resposta:

a) x=4/9

b) x=7/15

c) x=729/82

Explicação passo-a-passo:

a) 27/2x - 1 = 9x + 1

27/2 x - 9x = 1+1

9/2 x = 2

x = 2/(9/2)

x= 4/9

b) 5/2×-1=1/6

5/2x = 1/6 + 1

5/2x = 7/6

x = (7/6) / (5/2)

x = 7/15

c) 27/3-×=1/81×

27/3 = 1/81x + x

27/3 = 82/81x

x = (27/3) / (82/81)

x = 729/82