Question

a) 3x-1=
b) 3-6x=
c)5x+2x-2=
d) 6x-2x-4=​

Answer 1

Resposta:

a) $\frac{1}{3}$ ou $0,3$

b) $\frac{1}{2}$ ou  $0,5$

c) $\frac{2}{7}$

d) 1

Explicação passo-a-passo:

Comecei igualando todas a 0.

a)

$3x - 1=0\\3x=1\\x=\frac{1}{3}$

b)

$3-6x=0\\-6x=-3\\6x=3\\x= \frac{3}{6}$

Reduzindo..

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

c)

$5x+2x-2=0\\7x-2=0\\7x=2\\x=\frac{2}{7}$

d)

$6x-2x-4=0\\4x-4=0\\4x=4\\x=\frac{4}{4}\\ x=1$