Question

Dertermine el valor de la variable (X) ayuda por favor esto solo es una foto ​

Answer 1

Respuesta:

x+7 = 12

x+7-7 = 12-7

x = 5

x+2 = 1

x+2-2 = 1-2.

x = -1

x+9 = 1

x+9-9 = 1-9

x = -8

x-4 = -3

x-4+3 = -3+3

x-1 = 0

x-1+1 = 0+1.

x = 1

3x = 21

3x/3 = 21/3.

x = 7

6x = -36

6x/6 = -36/6

x = -6

3x+1 = 7

3x+1-7 = 7-7

3x+(-6) = 0

3x-6 = 0

3x-6+6 = 0+6

3x = 6

3x/3 = 6/3

x = 2

3x-4 = 8

(3x/3)-(4/3) = (8/3)

x-4/3 = 8/3

x-4/3+4/3 = 8/3+4/3

x = (8+4)/3

x = 12/3

x = 4

x/5 = -3

5(x/5) = 5(-3)

5x/5 = -15

x = -15

x/4 = 6

4(x/4) = 4(6)

4x/4 = 24

x = 24

Explicación paso a paso: