Question

1) Determine o valor de x nas equações a seguir:

a) x + 6 = - 10

b) x – 2 = - 4

c) 7x + 2 = 4x + 23
d) 4x + 6 = 2x + 18

e) 5 – 2x + 3 = - 8 + 4x – 2

f) 2 (x + 3) = 10

g) 4 ( x – 2) = 3x

h) 15 – 3x + 7 = - 5 + 2x – 3​

Answer 1

Resposta:

a) x + 6 = - 10

x= -10-6

x= -16

b) x – 2 = - 4

x= -4+2

×= -2

c) 7x + 2 = 4x + 23

7x-4x= 23-2

3x= 21

x= 21/3

x=7

d) 4x + 6 = 2x + 18

4x-2x= 18-6

2x= 12

x= 12/2

x= 6

e) 5 – 2x + 3 = - 8 + 4x – 2

-2x-4x= -8-2-3-5

-6x = -18

x= -18/-6

x= 3

f) 2 (x + 3) = 10

2x+6=10

2×=10-6

2×=4

×= 4/2

x= 2

g) 4 ( x – 2) = 3x

4x-8=3x

4x-3x=8

x=8

h) 15 – 3x + 7 = - 5 + 2x – 3

-3x-2x= -5-3-7-15

-5x = -30

x= -30/-15

x= 2