Question

A) -10+x=-3

B) -6x7=-7

C) (12+8) :4=(9x-6):3+4


D) 2(3x15)-4x+20=2



Ejercicio completo pago para más.

Answer 1

Respuesta:

-10+x = -3

-10+x+10 = -3+10

x = 7

-6x+7 = -7

-6x+7-7 = -7-7

-6x = -14

-6x/-1 = -14/-1

6x = 14

6x/2 = 14/2

3x = 7

3x/3 = 7/3

x = 7/3

(12+8)/4 = (9x-6)/3+4.

(12/4)+(8/4) = (9x/3)-(6/3)+4

3+2 = 3x-3+4

5 = 3x-2+4.

5 = 3x + 2

5-2 = 3x+2-2

3 = 3x

3x = 3

3x/3 = 3/3

x = 1

2(3x15)-4x+20 = 2

6x+30-4x+20 = 2

(6-4)x-30+20 = 2

2x-10 = 2

2x/2-10/2 = 2/2

x - 5 = 1

x-5+5 = 1+5

x = 6

Explicación paso a paso: