Question

el valor de la x y su verificación de 2x-5=9 . 3x+15=36. 5x+3=38. 2x+4=10. x:3-5=1. x:2-7=1. x+3=20:2. x+2x-18=35-14.

Answer 1

Respuesta:

1) 2x - 5 = 9

2 = 9 + 5

2x = 14

x = 14/2

x = 7

2) 3x + 15 = 36

3x = 36 - 15

3x = 21

x = 21/3

x = 7

3) 5x + 3 = 38

5x = 38 - 3

5x = 35

x = 35/5

x = 7

4) 2x + 4 = 10

2x = 10 - 4

2x = 6

x = 2/6

x = 3

5) x/3 - 5 = 1

x/3 = 1 + 5

x/3 = 6

x = 6 × 3

x = 18

6) x/2 - 7 = 1

x/2 = 1 + 7

x/2 = 8

x = 8 × 2

x = 16

7) x + 3 = 20/2

x + 3 = 10

x = 10 - 3

x = 7

8) x + 2x - 18 = 35 - 14

3x - 18 = 35 - 14

3x - 18 = 21

3x = 21 + 18

3x = 39

x = 39/3

x = 13

Explicación paso a paso:

Verificación

1) 2 × 7 - 5 = 9

14 - 5 = 9

9 = 9

2) 3 × 7 + 15 = 36

21 + 15 = 36

36 = 36

3) 5 × 7 + 3 = 38

35 + 3 = 38

38 = 38

4) 2 × 3 + 4 = 10

6 + 4 = 10

10 = 10

5) 18/3 - 5 = 1

6 - 5 = 1

1 = 1

6) 16/2 - 7 = 1

8 - 7 = 1

1 = 1

7) 7 + 3 = 20/2

7 + 3 = 10

10 = 10

8) 13 + 2 × 13 - 18 = 35 - 14

13 + 26 - 18 = 35 - 14

39 - 18 = 35 - 14

21 = 35 - 14

21 = 21