15 + y - y – InterviewSolution

1.	15 + y - y
Answer» $\textbf{Question:}$ $\textbf{Simplify the following}$ $\textbf{15 + y - y}$ $\textbf{Answer:}$ $\green{15}$ $\textbf{Explanation:}$ $\textbf{Step 1:}$ $\textbf{<klux>SINCE</klux> two opposite add up to zero, <klux>REMOVE</klux> them from the expression}$ $\textbf{Why?}$ $\textbf{Learn why}$ $\textbf{Why do two opposite add up to zero?}$ The Inverse Property of Addition states that two opposite add up to 0 Since adding or subtarcting 0 doesn't change the value of the expression, we can just remove it $\textbf{Step 1:}$ $\textbf{Example:}$ $\textbf{Since -5x is the opposite of 5x, their sum is 0}$ $\textbf{7 + 5x + (-5x) = 7 + 0}$ Adding 0 won't change the value, so we can remove it ${7 +5x + (- 5x) = 7}$ So now you know let's GO back to solving as i said since two opposite add up to zero, remove them from the expression ${15}$ $\red{+ y - y}$ $\green{\textbf{15}}$ ✓ $\textbf{Hope this helps!}$ :)