1. The problem is to write an expression or equation all together in steps without dividing it into separate parts. 2. To do this, we first identify the full expression or equation that needs to be combined. 3. Then, we apply algebraic rules such as combining like terms, factoring, or expanding to write it as a single expression. 4. For example, if the problem is to simplify $\frac{2x}{3} + \frac{4x}{3}$, we combine the fractions since they have the same denominator: $$\frac{2x}{3} + \frac{4x}{3} = \frac{2x + 4x}{3}$$ 5. Next, we add the numerators: $$\frac{2x + 4x}{3} = \frac{6x}{3}$$ 6. Then, we simplify the fraction by canceling common factors: $$\frac{\cancel{6}x}{\cancel{3}} = 2x$$ 7. So, the expression written all together and simplified is $2x$. 8. This approach applies to any algebraic expression: combine terms, factor or expand as needed, and simplify to write it all together in one step.