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3 years ago

Three times the sum of a number and 12 is 45 plz help!

Mathematics

2 answers:

Norma-Jean [14]3 years ago

4 0

This can be written as 3(n+12)=45, where n is the unknown number

3(n+12)=45 <- Starting Equation

3n+36=45 <- Distributive Property

3n=9 <- Cancel 36 on both sides

n=3 <- Divide both sides by 3

So n=3

Hope this helped!

vredina [299]3 years ago

4 0

Answer:

Step-by-step explanation:

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