Question

2. Resuelve cada una de las siguientes ecuaciones:
a) X + 11 = 7
b) 2X - 5 = 15
c) 13 = 8 – 7X
d) 4 – (8- X) =9
e) -9X + 1 = 2 (X + 4)

Answer 1

Respuesta:

1)

x + 11 = 7

x = 7 - 11

x = -4

2)

2x - 5 = 15

2x = 15 + 5

x = 20/2

x = 10

3)

13 = 8 - 7x

7x = 8 - 13

x = -5/7

4)

4 - (8 - x) = 9

4 - 8 + x = 9

x = 9 + 4

x = 13

5)

-9x + 1 = 2(x + 4)

1 = 2x + 8 + 9x

11x = 1 - 8

11x = -7

x = -7/11