Question

Solve the equation. $$3-a=0$$

Short answer

The solution to the equation \(3-a=0\) is \(a=3\).

Step-by-step solution

Begin isolating the variable a

For a linear equation of the form \(3-a=0\), the first step to isolate a is to move the \(-a\) term from the right side of the equation to the left side. This can be achieved by performing the same action on both sides of the equation to maintain equality. Do this by adding \(a\) to both sides of the equation which will give: \(3-a+a=0+a\).

Simplify the equation

When simplifying the equation we get: \(3 = a\). The \(a\) is now on the right side of the equation, leaving the result.

Confirm the result

Finally, to confirm the result, substitute \(a=3\) into the original equation. We get \(3-3=0\). This does equal \(0\), which indicates that the solution is correct.