In the first line, one does not simply substitute for both limits of integration.
For the middle character (which was much too complicated) he simply substituted a circle.
The new owner is simply substituted as lessor for the old.
They fall into several classes and are not equivalent, nor can they be simply substituted one for another.
Kathleen is such a lovely name, I simply substituted it in my thoughts whenever he spoke of you.
Designers can thus achieve multiple levels of model fidelity by simply substituting one block element with another.
A higher gas tax would simply substitute a consumption tax, directed at the poor and middle class, for progressive income taxes.
When one name is simply substituted for another?
Indeed, simply substituting 2 for the modulus term reveals that the low order bits go through very short cycles.