-10 is equal to 5 subtracted from a number
Assume that the number is x
So the equation will be
[tex]-10=x-5[/tex]we put x at first because in subtraction the number after the word "from" comes first
Now let us find x
We need to move 5 to the left side to find x, so add 5 to both sides
[tex]\begin{gathered} -10+5=x-5+5 \\ -5=x \end{gathered}[/tex]The number is