Question

a ) 6(x+3)=12

b) 3(2x+4)=4(x+6)

c)
$\frac{x}{2} + 3 = 8$
Resolva as equações :

Answer 1

a) x= -1
b)x= 6
c)x= 10

Answer 2

A) 6 (x + 3) = 12
6x + 18 = 12
6x = 12 - 18
6x = - 6
x = - 6 / 6
x = - 1

B) 3(2x + 4) = 4(x + 6)
6x + 12 = 4x + 24
6x - 4x = 24 - 12
2x = 12
x = 12 / 2
x = 6

C) x/2 + 3 = 8
x + 3 • 2 = 8 • 2
x + 6 = 16
x = 16 - 6
x = 10