Question

subtract.
$(2n + 9) - (n + 7)$

Explanation:

Step1: Distribute the negative sign

$2n + 9 - n - 7$

Step2: Combine like terms (n terms)

$(2n - n) + 9 - 7 = n + 9 - 7$

Step3: Combine constant terms

$n + (9 - 7) = n + 2$

Answer:

$n + 2$