Question

6
2. Resolva as equações.
a) x + 2 = 10
b) x-6= -2
c) 3x - 21 = 0
d) 6+ x = 6.4
e) 0,5x - 9 = 1,5
f) 4x +3= -19
g) 5x + 2 = 2x - 1
h) 6 - 3x = -10 - 4x
1) 2(3x – 5) = 14
2x-1=3
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Answer 1

a) x= 10 - 2

x= 8

b) x= -2 + 6

x= 4

c)3x= 21

x= 21/ 3

x= 7

d) x = 6,4. 6

x= 0,4

e) 0,5x= 1,5 + 9

0,5x= 10,5

x= 10,5 / 0,5

x= 21

f) 4x= -19 - 3

4x= - 22

x = - 22/ 4

x= -5,5

g) 5x - 2x = -1 - 2

3x= - 3

x = -1

h) - 3x + 4x = - 10 - 6

x = -16

i) 6x - 10 = 14

6x= 14 +10

6x= 24

x = 24 / 6

x = 4

j)2x - 1 = 15

2x= 15 + 1

2x= 16

x= 16/2

x= 8