Question

Hallar el valor de x:

Answer 1

Respuesta:

4-(3/7)x-9 = 10

7(4)-7(3/7)x-9(7) = 7(10)

28-3x-63 = 70

(28-63)-3x = 70

-35-3x = 70

-35-3x+35 = 70+35

-3x = 105

-3x/-1 = 105/-1

3x = -105

3x/3 = -105/3

x = -35

Comprobación :

4-(3/7)(-35)-9 = 10

4-((3/7)(-35))-9 = 10

4-((-105)/7)-9 = 10

4-(-15)-9 = 10

4+15-9 = 10

4+(15-9) = 10

4+6 = 10

10 = 10

R// " X " vale -35 .

Explicación paso a paso: