Question

Calcule a raiz da equação:
A) 3x=x+1/3
B)5x+31=6/2x-2
C)4/5x+1=x-2
D)3x-1/2=4-x
E)3(x+2)=6(1-x)
QUERO OS CÁLCULOS

Answer 1

Resposta:

Explicação passo-a-passo:

Olá...

A) $3x = x + \frac{1}{3}$

$\frac{9x}{3} = \frac{3x + 1}{3}$

$9x = 3x + 1$

$9x - 3x = 1$

$6x = 1$

$x = \frac{1}{6}$

$x = 0,16$

B) $5x + 31 = \frac{6x}{2} - 2$

$5x + 31 = 3x -2$

$5x - 3x = -2 - 31$

$2x = -33$

$x = \frac{-33}{2}$

$x = 16,5$

C) $\frac{4x}{5} + 1 = x - 2$

$\frac{4x + 5}{5} = \frac{5x - 10}{5}$

$4x + 5 = 5x - 10$

$4x - 5x = -10 - 5$

$-x = -15 (-1)$

$x = 15$

D) $3x - \frac{1}{2} = 4 - x$

$\frac{6x - 1}{2} = \frac{8 - 2x}{2}$

$6x - 1 = 8 - 2x$

$6x + 2x = 8 + 1$

$8x = 9$

$x = \frac{9}{8}$

$x = 1,125$

E) $3(x + 2) = 6(1-x)$

$3x + 6 = 6 - 6x$

$3x + 6x = 6 - 6$

$9x = 0$

$x = \frac{0}{9}$

$x = 0$