Question

Rita is adding 3 + (–8) + 1. She rewrites the expression as 3 + (–1) + 8. What is Rita’s error?

Answer 1

The original sum has (+3) + (-8) + (+1), whereas in her rewritten version, the 1 is negative and the 8 is positive, which is incorrect. If we were answer the first, it would equal -4, but if we were to answer the second, it would equal 10. I hope this helps!

Answer 2

Rita made the
`1` negative and the
`8` positive

Explanation:

we have

`3+(-8)+1`

eliminate the parenthesis

`3+(-8)+1=3-8+1=-4` ----> in the expression the
`1` is positive and the
`8` is negative

Rita made the
`1` negative and the
`8` positive