Question

1º Determine " X ":
a)6x=2x+16 b)2x-5=x+1 c)2x+3=x+4 d)5x+7=4x+10 e)4x-10=2x+2 f)4x-7=8x-2 g)2x+1=4x-7 h)9x+9+3x=15

Answer 1

Oi Manu,

Resolução

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

b) 2x - 5 = x + 1
2x - x = 1 + 5
x = 6

c) 2x + 3 = x + 4
2x - x = 4 - 3
x = 1

d) 5x + 7 = 4x + 10
5x - 4x = 10 - 7
x = 3

e) 4x - 10 = 2x + 2
4x - 2x = 2 + 10
2x = 12
x = 12/2
x = 6

f) 4x - 7 = 8x - 2
4x - 8x = - 2 + 7
- 4x = 5
4x = - 5
x = - 5/4

g) 2x + 1 = 4x - 7
2x - 4x = - 7 - 1
- 2x = - 8
2x = 8
x = 8/2
x = 4

h) 9x + 9 + 3x = 15
9x + 3x = 15 - 9
12x = 6
x = 6/12
x = 1/2

Espero ter ajudado !!!

Answer 2

a)6x=2x+16
6x-2x=16
4x=16
x=16/4 
x=4 
B) 2x-5=x+1
2x-x=+1+5
1x=6
x=6/1
x=1