Question

Donald thinks that $\frac{3}{x}+\frac{4}{x}\mathrm{is}\frac{7}{2x}$. Is Donald correct? Explain.

Short answer

Donald is not correct.

Step-by-step solution

Step 1. Given information.

Consider the given information.

$\frac{3}{x}+\frac{4}{x}\mathrm{and}\frac{7}{2x}$

Step 2. Calculation.

As the expression have the same denomnator, so add them.

$\begin{array}{l}\frac{3}{x}+\frac{4}{x}=\frac{3+4}{x}\\ =\frac{7}{x}\end{array}$

As the obtained result is not equal to the given result. Thus, Donald did perform the addition incorrect way. he added denominator not numerator.