Question

Resolva as seguintes equações:

A) x - 8= -10 R= -2

B) x + 9= -1 R= -10

C) 3x= 12 R= 4

D) 9x= 18 R= 2

E) 35x= -105 R= 3

F) 7x -1= 13 R= 2

Answer 1

a) x-8= -10

x= -10+8

x= -2

b) x+9= -1

x= -1-9

x= -10

c)3x=12

x=12÷3

x=4

d)9x=18

x=18÷9

x=2

e)35x= -105

x= -105÷35

x= -3

f)7x-1=13

7x=13+1

7x=14

x=14÷7

x=2