Question

determine o conjunto solucao das equações. a)2×=64. d)25×=625
b)7×=343. e)2×=1/32
c)8×=32. f)(2/3)×=(8/27)
​

Answer 1

Resposta:

a) 32

b) 49

c) 4

d) 25

e) 1/64

f) 4/9 ou 2/3

Explicação passo-a-passo:

a) 2x = 64

x = $\frac{64}{2}$

x = 32

b) 7x = 343

x = $\frac{343}{7}$

x = 49

c) 8x = 32

x = $\frac{32}{8}$

x = 4

d) 25x = 625

x = $\frac{625}{25}$

x = 25

e) 2x = 1/32

x = $\frac{1}{32} . \frac{1}{2}$

x = $\frac{1}{64}$

f) 2/3x = 8/27

x = $\frac{8}{27} . \frac{3}{2}$

x = $\frac{4}{9}$

ou simplificando:

x = $\frac{2}{3}$