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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.

Solving the equation $x−10=7$

step by step localid="1649157736317" $\begin{array}{l}x−10=7\\ x−10+10=7+10\text{​â¶Ä‹}\left[\text{​â¶Ä‹Add10tobothsides​â¶Ä‹}\right]\text{​â¶Ä‹}\\ x=17\end{array}$

The solution of the equation $x−10=7$

is$x=17$