find an expression which represents the difference when (10x - 9) is subtracted from (9x + 7) in simplest…

find an expression which represents the difference when (10x - 9) is subtracted from (9x + 7) in simplest terms.
Answer
Explanation:
Step1: Set up the subtraction expression
$(9x + 7)-(10x - 9)$
Step2: Distribute the negative sign
$9x+7 - 10x + 9$
Step3: Combine like - terms
$(9x-10x)+(7 + 9)$ $=-x + 16$
Answer:
$-x + 16$