Question

What number added to four and five-tenths, is twelve?7.54.516.58.5

Answer 1

Given:

What is the number added to four and five-tenths, is twelve

Let the number = x

So, we can write the following equation:

$x+4.5=12$

subtract 4.5 from both sides

$\begin{gathered} x+4.5-4.5=12-4.5 \\ x=7.5 \end{gathered}$

So, the answer will be the number is 7.5