Question

8) Elimina los paréntesis aplicando la propiedad
distributiva. Luego, resuelve.
a) 3(x + 5) = 5x + 11

b) 11 − 3x = 2(x + 3)


ayudaa porfa

Answer 1

Explicación paso a paso:

a) 3(x + 5) = 5x + 11

3x + 15 = 5x + 11

15 - 11 = 5x - 3x

4 = 2x

4/2 = x

2 = x

_______________________________

b) 11 − 3x = 2(x + 3)

11 - 3x = 2x + 6

11 - 6 = 2x + 3x

5 = 5x

5/5 = x

1 = x

Answer 2

a)

3x+15 = 5x+11

3x-5x = 11-15

-2x = -4

x = 2

b)

11-3x = 2x+6

11-6 = 2x+3x

5x = 5

x = 1