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 $3  w  =  -15$with proper steps

localid="1649338017306" $\begin{array}{l}3·w=−15\\ \frac{3w}{3}=\frac{−15}{3}\left[\text{Divideeachsideby}3\right]\\ w=−5\end{array}$

Solution of the equation is $w  =  -5$