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4n = 20 is called an EQUATION, because there is an 'equals(=)' sign present.

To solve

Divide both sides by '4'

Hence

4n/4 = 20 /4

Cancel down by '4'

n = 5

NB If you write ' 4n + 20' . without the 'equals sign' , then it is called an EXPRESSION.

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lenpollock

Lvl 17
1w ago

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