Question

encontre a soluçao das equaçoes a seguir, ou seja descubra o valor de x

a) 2x = 16

b) x + 5 = 9

c) 3x - 1 = 20

d) 2x + 5 = x + 8

e) 5x - 2x = 33

f) 6x - 34 = 4x - 12​

Answer 1

2x= 16

x= 16/2

x= 8

_______________

x + 5= 9

x= 9 - 5

x= 4

_______________

3x - 1= 20

3x= 20 + 1

3x= 21

x= 21/3

x= 7

_______________

2x + 5= x + 8

2x - x= 8 - 5

1x= 3

x= 3/1

x= 3

_______________

5x - 2x= 33

3x= 33

x= 33/3

x= 11

_______________

6x - 34= 4x - 12

6x - 4x= - 12 + 34

2x= 22

x= 22/2

x= 11

Answer 2

¡Hey!!

Explicação passo-a-passo:

$a) \: 2x = 16 \\ x = \frac{16}{2} \\ x = 8$

$b) \: x + 5 = 9 \\ x = 9 - 5 \\ x = 4$

$c) \: 3x - 1 = 20 \\ 3x = 20 + 1 \\ x = \frac{21}{3} \\ x = 7$

$d) \: 2x + 5 = x + 8 \\ 2x - x = 8 - 5 \\x.(2 - 1) = 3 \\ x = 3$

$e) \: 5x - 2x = 33 \\ x.(5 - 2) = 33 \\ 3x = 33 \\ x = \frac{33}{3} \\ x = 11$

$f) \: 6x - 34 = 4x - 12 \\ 6x - 4x = - 12 + 34 \\ x.(6 - 4) = 22 \\ 2x = 22 \\ x = \frac{22}{2} \\ x = 11$

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