Question

resolva as equacoes do 1 grau,sendo v=Q
A) x+6=5
B) 6x=2x+16
C) 9x+9+3x=15
D) 3 (2x-1)= -2 (x+3)
E) $\frac{x}{2}$ + $\frac{x}{3}$ =1

Answer 1

Olá!!!

Resolução!!!

a)

x + 6 = 5
x = 5 - 6
x = - 1

S = { - 1 }

b)

6x = 2x + 16
6x - 2x = 16
4x = 16
x = 16/4
x = 4

S = { 4 }

c)

9x + 3 + 3x = 15
9x + 3x = 15 - 3
12x = 12
x = 12/12
x = 1

S = { 1 }

d)

3 ( 2x - 1 ) = - 2 ( x + 3 )
6x - 3 = - 2x - 6
6x + 2x = - 6 + 3
8x = - 3
x = - 3/8

S = { - 3/8 }

e)

x/2 + x/3 = 1

MMC ( 2, 3 ) = 6

multiplique tudo por 6

( x/2 + x/3 ) • 6 = 1 • 6
6x/2 + 6x/3 = 6
3x + 2x = 6
5x = 6
x = 6/5

S = { 6/5 }

Espero ter ajudado!