George and Bella are asked to solve - 3x - 30 = 5x + 18. Identify where one of them made an error.

George

Bella

- 3x - 30 = 5x + 18

- 3x - 30 - 5x = 5x + 18 - 5x

-8x - 30 = 18

- 8x - 30 + 30 = 18 + 30

-8x = 48

Negative 8x over negative 8 equals 48 over negative 8

x = - 6

- 3x - 30 = 5x + 18

-3x - 30 - 3x = 5x + 18 - 3x

- 30 = 2x + 18

-30 - 18 = 2x + 18 - 18

- 48 = 2x

Negative 48 over 2 equals 2x over 2

x=-24

Question

Sofia Moran

21 February, 05:25

+4

Answers (1)

Know the Answer?

Johnathon Mercado · Answer 1

For the second,

In the first step, instead of adding 3x for both sides, they subtract 3x instead.