Question

compute.
-5.26 + 28.89 =
-63.8 + (-74.5) =

Explanation:

Step1: Calculate \(-5.26 + 28.89\)

To add a negative number and a positive number, we can rewrite it as \(28.89 - 5.26\). Subtracting the decimal parts: \(0.89 - 0.26 = 0.63\), and subtracting the whole number parts: \(28 - 5 = 23\). Then we add those results together: \(23 + 0.63 = 23.63\). So, \(-5.26 + 28.89 = 23.63\).

Step2: Calculate \(-63.8 + (-74.5)\)

When adding two negative numbers, we add their absolute values and then put a negative sign in front. The absolute value of \(-63.8\) is \(63.8\) and the absolute value of \(-74.5\) is \(74.5\). Adding these absolute values: \(63.8 + 74.5 = 138.3\). Then we apply the negative sign, so \(-63.8 + (-74.5) = -138.3\).

Answer:

First result: \(23.63\)
Second result: \(-138.3\)