Question

compute.
39.4 + (-7.2) =
3.9 - 36.24 =

Explanation:

Step1: Rewrite addition with negative

$39.4 + (-7.2) = 39.4 - 7.2$

Step2: Calculate first subtraction

$39.4 - 7.2 = 32.2$

Step3: Rearrange second subtraction

$3.9 - 36.24 = -(36.24 - 3.9)$

Step4: Calculate second subtraction

$36.24 - 3.9 = 32.34$, so $-(32.34) = -32.34$

Answer:

$39.4 + (-7.2) = 32.2$
$3.9 - 36.24 = -32.34$