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Guys how do I solve 3x+x. PLEASE HELP!!!!!

User Manish Doshi
by
2.7k points

2 Answers

15 votes
15 votes

Answer: 4x

Explanation:

Combine like terms

3x + x

4x

Hope this helps!

User Alex Strickland
by
3.2k points
16 votes
16 votes

Answer:

4x

Explanation:

You want to "solve" 3x +x.

Coefficient

Start by understanding the meaning of 3x. The coefficient of 3 tells you how many instances of x you have. The term 3x is a representation of repeated addition:

3x = x + x + x . . . . . . . . x is included in the sum 3 times

The sum 3x + x can be written out as ...

3x + x = (x + x + x) + x

This is fully equivalent to ...

3x + x = x + x + x + x

We recognize the sum on the right includes 4 instances of x, so can be written using a coefficient as ...

x + x + x + x = 4x

This means ...

3x + x = 4x

Distributive property

If we use the distributive property, we can also get there this way:

3x + x = 3x + 1x = (3 +1)x = 4x

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User Kshah
by
2.5k points
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