Question

Multiply and simplify and find the excluded values

Answer 1

`(10)/(x + 10)`

Explanation:

`( (1)/(x + 10) )( (10x + 30)/(x + 3) ) = ( (1)/(x + 10) )( (10(x + 3))/(x + 3) ) = (1)/(x + 10) * 10 = (10)/(x + 10)`

1. Factor 10x + 30 (put 10 before the brackets)

2. (x + 3) becomes a common multiplier, so we simplify it