Question

a) x + 5 = 8

 

b) 3 = 15

 

c) x − 1 = 5

 

d) 2 − 2 = 12 – 5x

 

e) 7y – 10 = y + 50

 

f) 9x – 2 = 4x + 18

 
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Answer 1

Resposta:

a)

passa o 5 negativo pro outro lado

x + 5 = 8

x = 8 - 5

x = 3

b) 3=15???

se for, 3x=15

x=15/3

x=5

c)

x - 1 = 5

x = 5+1

x=6

d)

2x-2=12-5x

2x+5x=12+2

7x=14

x=14/7

x=2

e)

7y - 10 = y + 50

7y - y = 50 + 10

6y = 60

y = 60/6

y = 10

f)

9x-2=4x+18

9x-4x=18+2

5x=20

x=20/5

x= 4

Explicação passo-a-passo: