Posted by **Jerald** on Saturday, November 23, 2013 at 12:54pm.

102=8a+5a-3a

I add 8a and 5a first to get 13 and then add 3?

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**Ms. Sue**, Saturday, November 23, 2013 at 12:56pm
No.

Subtract 3a.

102 = 10a

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**Jerald**, Saturday, November 23, 2013 at 12:58pm
8a+5a=13a=3a=10a Divide 102/10?

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**Jerald**, Saturday, November 23, 2013 at 1:02pm
Or would the answer be 10a because 8a 5a and 3a are all like terms

- Math -
**Ms. Sue**, Saturday, November 23, 2013 at 1:22pm
To find the value of a,divide both sides by 10.

10a = 102

a = 102 / 10

a = 10.2

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