Question

Si h) x/2 + x/3 - x/6 = 8/6

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Answer 1

Răspuns:

Explicație pas cu pas:

a)

x/2 + 3/2 = 10/2 | × 2

x + 3 = 10

x = 10 - 3 = 7

b)

7/3 - x/3 = 2/3 | × 3

7 - x = 2

- x = 2 - 7

- x = - 5 ⇒ x = 5

c)

6/5 + 2/5 + x/5 = 13/5

8/5 + x/5 = 13/5 | × 5

8 + x = 13

x = 13 - 8 = 5

d)

19/11 - 3/11 - x/11 = 5/11

16/11 - x/11 = 5/11 | × 11

16 - x = 5

- x = 5 - 16

- x = - 11 ⇒ x = 11

e)

13/12 + 5/12 - x/12 = 1/12

18/12 - x/12 = 1/12 | × 12

18 - x = 1

- x = 1 - 18

- x = - 17 ⇒ x = 17

f)

1 + x/17 = 23/17 | × 17

17 + x = 23

x = 23 - 17 = 6

g)

2 - x/13 = 10/13 | × 13

26 - x = 10

- x = 10 - 26

- x = - 36 ⇒ x = 36

h)

x/2 + x/3 - x/6 = 8/6 | × 6

3x + 2x - x = 8

4x = 8

x = 8/4 = 2