# Math

posted by .

102=8a+5a-3a

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

• Math -

No.

Subtract 3a.

102 = 10a

• Math -

8a+5a=13a=3a=10a Divide 102/10?

• Math -

Or would the answer be 10a because 8a 5a and 3a are all like terms

• Math -

To find the value of a,divide both sides by 10.

10a = 102
a = 102 / 10
a = 10.2

## Similar Questions

1. ### bartlett hill,math

add the like terms together.a+b+a+2b Okay. Well, the questoin says to add the like terms together, that means add the A's together and add the B's together. a+b+a+2b Alright, so your a's and your first b don't have a number in front …
2. ### Chemistry

Why must one add water first and then add the acid rather than add the acid first and then water?
3. ### chem

The molarity and the molality of a solution prepared by dissolving 2.00 g of ethanol C2H5OH with 100.0 g of water to give a final volume 102 mL are would i just add both the grams and divide by 102 for molarity?
4. ### Math

Which of the following would eliminate the variable on the left side of the given equation?
5. ### math

Which of the following would eliminate the variable on the left side of the given equation?
6. ### math

Which of the following would eliminate the variable on the left side of the given equation?
7. ### Math

Which of the following would eliminate the variable on the left side of the given equation?
8. ### statistics

Use summation notation to express each of the following calculations: a. Add 1 point to each score, then add the resulting values. b. Add 1 point to each score and square the result, then add the squared values. c. Add the scores and …
9. ### math

1. First of all, pick the number of times a week that you eat chocolate. This number must be more than one but less than ten. 2. Multiply this number by 2 (just to be bold). 3. Add 5 (for Sunday). 4. Multiply it by 50. 5. Add 1750. …
10. ### math

1 2/3 add 2 8/9 then divide the answer by 3. 1 2/3 add 2 8/9= 7/3 add 26/9= 21/9 add 26/9=47/9 I got that bit I just don't know how to divide

More Similar Questions