Question

Grace solved the equation 122=−58 122 = x - 58 . Her work is shown. What error did Grace make?

Answer 1

Explanation:

Grace should have added 58 to both sides of the equation instead of subtracting.

Answer 2

`122 = x - 58 \\ x = 122 + 58 \\ x = 180 \\ error = 0.5 * {10}^( - 3) \\ = 0.0005`