6 3 - 20x Mai thinks Tyler's answer is incorrect. She says, " If expressions are equivalent then they are equal for any value of the variable. Why don't you try to substitute the same value for x in all the equations and see where they are not equal?" Where did Tyler

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Chapter2: Second-order Linear Odes
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Tyler is using the distributive property on the expression 9 - 4 ( 5x - 6 ) . Here is the work:

9 - 4 ( 5x - 6 )

9 + (-4) ( 5x + -6 )

9 + -20x + -6

3 - 20x

Mai thinks Tyler's answer is incorrect. She says, " If expressions are equivalent then they are equal for any value of the variable. Why don't you try to substitute the same value for x in all the equations and see where they are not equal?"

Where did Tyler make an error and how can we correct it?

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