Question

What is the sum start fraction a minus 1 over a b c cubed end fraction plus start fraction 3 minus b over a b c cubed end fraction ?
(1 point)
Responses

start fraction a minus b minus 3 over a b c superscript 3 baseline end fraction
Image with alt text: start fraction a minus b minus 3 over a b c superscript 3 baseline end fraction

start fraction a minus b minus 3 over a b c superscript 3 baseline end fraction
Image with alt text: start fraction a minus b minus 3 over a b c superscript 3 baseline end fraction

start fraction a minus 4 plus b over a b c superscript 3 baseline end fraction
Image with alt text: start fraction a minus 4 plus b over a b c superscript 3 baseline end fraction

Start Fraction a minus b plus 2 over a b c cubed End Fraction

Answer 1

wrong.
(a-1) / abc^3 + (3-b) / abc^3 = (a-b-2) / abc^3

Answer 2

The sum is start fraction a minus b minus 3 over a b c cubed end fraction.

Answer 3

I apologize for the mistake. The correct sum is start fraction a minus b minus 2 over a b c cubed end fraction.