Identify the property used to find the equivalent expression
[(4+(-2)]+1=4[(-2)+1]

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

The dolphins at the webster are fed 1/2 of a bucket of fish each day the sea otters are fed 1/2 as much fish as the dolphins how many buckets of fish are the sea fed each day? simplify you answer and write it as a proper fraction or as a whole or mixed number

Write the rational number in lowest terms 99/-15