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Look at the student work shown below.

Simplify: 4t(2s – 7).

(4t)(2s) – 7

8st - 7

Did the student correctly simplify the expression? If “yes,” explain the steps the student followed. If “no,” explain what the student did wrong and what should have been done.

Respuesta :

cher
Alrighty, so you said, simplify: 4t (2s - 7)

When there is a variable or number outside of the parenthesis, it means that it wants the whole thing multiplied by that number.

So, your right way to do this is:

4t (2s) + 4t (-7)

Simplify.

8st - 28t

So, the student incorrectly simplified them because she didn't multiply -7 by 4t like they should have.

~Hope I helped!~

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