91Ó°ÊÓ

An equation is a mathematical statement that two expressions are equal. The solution of an equation is the value that when substituted for the variable makes the equation a true statement.

Example: 3x + 5 = 14 is an equation, in which 3x+5 and 14 are two expressions separated by an ‘’equal’’ sign.

Step 1: Simplify each side of the equation by removing parenthesis and combining the like terms.

Step 2: Use addition or subtraction to isolate the variable term on one side (preferably in the left side).

Step 3: Use Multiplication or Division to solve for the variable.

Now solving the equation $11-p=19$with proper steps localid="1649159878790" $\begin{array}{l}11−p=19\\ 11−11−p=19−11\left[\text{Subtract11frombothsides}\right]\\ −p=8\\ −1·−p=−1·8[\text{Multiplybothsidesby}−1]\\ p=−8\end{array}$

Solution of the equation is $p=-  8$