Question

subtract.
7 - (-9) =
20 - 26 =

Explanation:

Step1: Apply subtraction - negative number rule

Subtracting a negative number is the same as adding its positive counterpart. So, $7-(-9)=7 + 9$.
$7+9=16$

Step2: Perform simple subtraction

For $20 - 26$, we subtract the smaller number from the larger one and give the result a negative sign since $26>20$. So, $20-26=-(26 - 20)$.
$26-20 = 6$, so $20-26=-6$

Answer:

$7-(-9)=16$
$20 - 26=-6$