Question

1 - Resolva As Equações De 1 Grau
a) x + 2 = 5 h) 2 x - 8 = 8
b) x - 11 = 0 i) 3 x + 1 = 19
c) 6 = 6 j) 7 x - 4 = 10
d) 4 x = - 8 k) 9 x + 5 = 4 x
e) 6 x + 5 = 6 l) 2 x + 1 = - 8
f) 8 x + 4 = 0 m) 10 = 2 x

Answer 1

a) x + 2 = 5
x=5-2
x=3
b) x - 11 = 0
x=11
c) 6 x= 6
x=6/6=1
d) 4 x = - 8
x=-8/4
x=-2
e) 6 x + 5 = 6
6x=6-5
6x=1
x=1/6

f) 8 x + 4 = 0
8x=-4
x=-4/8=-1/2

h) 2 x - 8 = 8
2x=8+8
2x=16
x=8
i) 3 x + 1 = 19
3x= 19-1
3x=18
x=18/3
x=6
j) 7 x - 4 = 10
7x=10+4
x=14/7
x=2

k) 9 x + 5 = 4 x
9x-4x=-5
5x=-5
x=-1

l) 2 x + 1 = - 8
2x=-8-1
2x=-9
x=-9/2=-4,5

m) 10 = 2 x
2x=10
x=10/2
x=5

Answer 2

1 - Resolva As Equações De 1 Grau 
a) x + 2 = 5
x + 2 = 5
x = 5 - 2
x = 3

 h) 2 x - 8 = 8

2x - 8 = 8
2x = 8 + 8
2x = 16
x = 16/2
x = 8

b) x - 11 = 0

x - 11 = 0
x = + 11

 i) 3 x + 1 = 19 
3x + 1 = 19
3x = 19 - 1
3x = 18
x = 18/3
x = 6

c) 6 = 6  ?????????????????

 j) 7 x - 4 = 10

7x - 4 = 10
7x = 10 + 4
7x = 14
x = 14/7
x = 2

d) 4 x = - 8

4x = - 8
x = - 8/4
x = - 2

 k) 9 x + 5 = 4 x

9x + 5 = 4x
9x = 4x - 5
9x - 4x = - 5
5x = - 5
x = - 5/5
x = - 1


e) 6 x + 5 = 6

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

 l) 2 x + 1 = - 8 

2x + 1 = - 8
2x = - 8 - 1
2x = - 9
x =  - 9/2

f) 8 x + 4 = 0

8x + 4 = 0
8x = - 4
x = - 4/8    ( divide AMBOS por 4)
x = - 1/2

m) 10 = 2 x

10 = 2x  mesmo que

2x = 10
x = 10/2
x = 5