In this exercise, you will learn to simplify algebraic expressions by grouping like terms. Before attempting the exercise, make sure you know the following.
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Evaluate 45x -y-50x-7y.
Simplify the following a-b+ab-7b-42a+5b-12ab+23abc.
Write a+b+ab in its simplest form.
Which of the following work out to give c-2d ?