Question

Podem me ajudar por favor?​

Answer 1

Resposta:

A)

$3(2x-1) = 2(x+1) + 3\\6x - 3 = 2x + 2 + 3\\6x - 2x = 3 + 2 + 3\\4x= 8\\x = \frac{8}{4} \\x = 2$

B)

$4 ( x + 3) - x = 24 + x\\4x + 12 - x = 24 + x \\4x - 2x = -12 + 24\\2x = 12\\x = \frac{12}{2} \\x = 6$

C)

$\frac{x-2}{6} - \frac{2x}{4} = 4\\\frac{2x - 4}{12} - \frac{6x}{12} = 4\\4x - 4 = 4 \\4x = 4 + 4 \\4x = 8\\x = \frac{8}{4} \\x = 2$

D)

$6x = 2x + 28 \\6x - 2x = 28\\4x = 28\\x = \frac{28}{4}\\ x = 4$

E) tem um pedaço faltando dessa :(

F)

$9x - 3 ( 2x + 2) = 15 \\9x - 6x - 6 = 15\\\\3x = 15 + 6 \\3x = 21\\x = \frac{21}{3}\\ x = 7$

G)

$\frac{3x - 1}{4} = \frac{-x -3}{2} \\\frac{3x - 1 = -2x - 6}{4}\\ 3x - 1 = -2x - 6\\\\3x + 2x = -6 + 1\\5x = -5\\x = -1$

H)

$2 ( x + 5) -3 (5-x) = 5\\2x + 10 - 15 - 3x = 5\\2x - 3x = 15 - 10 + 5\\ -x = 20\\\x= -20$

Explicação passo-a-passo: