SOLUTION: Hello, I have a question from my homework, it's using distributive property, Here's the problem: 10a+2(a+9)+25 I tried it and I'm not sure if it's correct but i got 2a+143 I

Question 934285: Hello, I have a question from my homework, it's using distributive property, Here's the problem: 10a+2(a+9)+25
I tried it and I'm not sure if it's correct but i got 2a+143
If you need some guidelines it's a expression that needs simplified using the distributive property and the commutative property. Please help, thanks!
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

Using distributive property:

Using commutative property:

-----------------------------
You can always do a crude check by
plugging in a number for the variable:
I'll say:
-------------------

and, also:

It checks OK

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