Question

EXERCÍCIOS
1) Resolva as seguintes equações, sendo
a) x/3 + 4 = 2x
b) x/2 + 4 = 1/3
c) 5x/3 - 2/5 = 0
d) x - 1 = 5 - X/4


URGENTEEEEE

Answer 1

Resposta:

a) x/3 + 4 = 2x

$\frac{x}{3} - 2x = -4\\\\\frac{x - 6x}{3} = - 4 \\\\ -5x = 3.(-4)\\-5x = -12\\5x = 12\\x = \frac{12}{5}$

b) x/2 + 4 = 1/3

$\frac{x}{2} = \frac{1}{3} -4\\\\\frac{x}{2} = \frac{1-12}{3}\\\\\frac{x}{2} = \frac{-11}{3}\\\\3x = -22\\x = \frac{-22}{3}$

c) 5x/3 - 2/5 = 0

$\frac{5x}{3} - \frac{2}{5} = 0\\\\\frac{25x - 6}{15} = 0\\\\25x - 6 = 0\\25x = 6\\x = \frac{6}{25}$

d) x - 1 = 5 - X/4

$x + \frac{x}{4} = 5 + 1\\\\\frac{4x+x}{4} = 6\\\\5x = 24\\x = \frac{24}{5}$