The Singing Hedgehog Guide to:
Algebra - Simplification 3

Remember we "BUNG TOGETHER THINGS THAT ARE THE SAME"

Here is a harder example:

2(4x - 3y) - (2x - 6y)    Brackets first of course! Careful with minuses:

8x - 6y - 2x + 6y         sort together:

8x - 2x - 6y + 6y         tidy up:

6x                             don't write 0y - very amateur!!
 

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