Question

• 4.7 - 3.1 =

Explanation:

Step1: Rewrite the subtraction as addition of negative

Subtracting a positive number is the same as adding its negative. So, \(-4.7 - 3.1 = -4.7 + (-3.1)\).

Step2: Add the two negative numbers

When adding two negative numbers, we add their absolute values and keep the negative sign. The absolute value of \(-4.7\) is \(4.7\) and the absolute value of \(-3.1\) is \(3.1\). Adding these absolute values: \(4.7 + 3.1 = 7.8\). Then we keep the negative sign, so the result is \(-7.8\).

Answer:

\(-7.8\)