Question 1(a)
State whether the given expression is an equation or not. Give reason for your answer. Identify the variable from the given expression.
17=x+7
An equation is a mathematical statement that shows the equality of two expressions. An equation has an equal sign (=) between its left hand side and right hand side. Hence, 17=x+7 is an equation.
A variable is a letter that represents an unknown quantity which can take any value.The variable in the given equation is x.