Sentences are grammatically correct and make sense.
In the first one means:
We have as much pens as they do.
Second means:
They are as tall as us.
"tan" is the equivalent in English for "as much". The concordance is well done in both cases.
Una persona con diabetes puede vivir de 80 a 35 años como cualquier persona normal mientras que se cuide.
<span>According to Don Quixote to whom Sancho owes the power to be governor is what google says</span>
A. The sink B. Your telephone C. The oven D. The mirror A2. The closet B2. The garbage C2. The roof D2. The vacuum cleaner