Question

resolva as seguintes equações: a) 2x-3=17
b) 2x+7=17
C) 2x-8=10
d) 2x+2=14
e) 2x+4=10
f) 5x-12=20​

Answer 1

Resposta:

a) 2x - 3 = 17

2x = 17 + 3

2x = 20

x = 20/2

x = 10

b) 2x + 7 = 17

2x = 17 - 7

2x = 10

x = 10/2

x = 5

c) 2x - 8 = 10

2x = 10 + 8

2x = 18

x = 18/2

x = 9

d) 2x + 2 = 14

2x = 14 - 2

2x = 12

x = 12/2

x = 6

e) 2x + 4 = 10

2x = 10 - 4

2x = 6

x = 6/2

x = 3

f) 5x - 12 = 20

5x = 20 + 12

5x = 32

x = 32/5

Answer 2

a)

2x-3=17

2x=17+3

2x=20

x=20/2

x=10

b)

2x+7=17

2x=17-7

2x=10

x=10/2

x=5

c)

2x-8=10

2x=10+8

2x=18

x=18/2

x=9

d)

2x+2=14

2x=14-2

2x=12

x=12/2

x=6

e)

2x+4=10

2x=10-4

2x=6

x=6/2

x=3

f)

5x-12=20

5x=20+12

5x=32

x=32/5

espero ter ajudado, bom estudo :)