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1 vote
Solve and explain.

a+2a+9a = ​


User Ujjwal
by
8.7k points

2 Answers

2 votes

Answer:

12a

Explanation:

a + 2a + 9a

to simplify the expression, take out a common factor of a from each term

= a (1 + 2 + 9)

= a × 12

= 12a

User Tyralcori
by
8.0k points
4 votes

Hello..! :)


\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \dashrightarrow \red{a+2a+9a }


\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \dashrightarrow \blue{ \: 12a}

To solve this simple problem, just add the numbers that are:


\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \sf \dashrightarrow \green{9 + 2}

But we must take into account that "a" in mathematics is an unknown and that it is only usually found in equations.

So, we must take a common factor from each term.

¿Doubts? On the comments. Greetings :D

User Harry Lawrence
by
8.1k points

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