Question

a) x + 101 = 300
R:x=300-101
x=199
b) x – 8 = –10

c) 9x = 18

d) 7x – 1 = 13

e) 6x – 10 = 2x + 14

f) 6x = 2x + 28

g) 3(x + 2) = 15

h) 2(x – 1) – 7 = 16

Já respondi uma :),

Answer 1

Resposta:

a) x + 101 =300

x = 300 - 101

x = 199

b) x - 8 = -10

x = - 10 + 8

x = -2

c) 9 x= 18

x = 18/ 9

x = 2

d)7 x - 1 = 13

7 x = 13 +1

x = 14/ 7

x = 2

e)6x -10 = 2 x +14

6x - 2x = 14 + 10

4 x = 24

x = 24/ 4

x = 6

f )6x = 2x +28

6x - 2x = 28

4x = 28

x = 28/ 4

x = 7

g)3 ( x + 2 ) = 15

3x + 6 = 15

3x = 15 - 6

x = 9/3

x = 3

h) 2 (x - 1 ) - 7 = 16

2x - 2 - 7 = 16

2x - 9 = 16

2x = 16 + 9

2 x = 25

x = 25 / 2

x = 12,5