Question

4)Resolva as seguintes equações:
a) x + 6 = 12
b) x - 4 = 5
c) x + 10 = 2
d) x -5 = - 7
e) x + 9 = -10
f) x + 40 = 80
g) x - 100 = -100
h) x - 11 = -15
i) 18 = x + 9

Answer 1

Resposta:

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Answer 2

a) x + 6 = 12

x = 12 - 6

x = 6

b) x - 4 = 5

x = 5 + 4

x = 9

c) x + 10 = 2

x = 2 - 10

x = -8

d) x - 5 = -7

x = -7 + 5

x = -12

e) x + 9 = -10

x = -10 - 9

x= -19

f) x + 40 = 80

x = 80 - 40

x = 40

g) x - 100 = -100

x = -100+100

x=0

h) x - 11 = -15

x = -15 + 11

x = - 26

i) 18 = x + 9

18 - 9 = x

9 = x