Simplifying Expressions Review

Help

Are these like terms: 9y, 9z, 9x

NO!

Which of the following sets of terms do not include like terms? [9x, 13x, -0.3x] [3, -1/2, 45] or [3x, 3y, 3z]

The third set

In the following expression, identify the like terms: 3x+2-3y-7

2 and -7

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