2006-11-16 08:55:36 · 18 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
15a = 3(3a+8)
15a=9a+24
15a-9a=24
6a=24
a=4
2006-11-16 08:57:07 · answer #1 · answered by mr_mumbles_nyc 3 · 2⤊ 0⤋
First, you would expand the right hand side.
So, 15a = 9a + 24.
Then, you would subtract 9a from both sides, so your new equation would be, 6a = 24.
Finally, you would divide both sides by 6 to solve for a.
a should turn out to be 4!
And to show all your work, you would simply do :
15a = 3(3a + 8)
15a = 9a + 24
15a - 9a = 9a + 24 - 9a
6a = 24
6a/6 = 24/6
a = 4
2006-11-16 09:02:28 · answer #2 · answered by SashMarie 2 · 0⤊ 0⤋
15a = 3 (3a + 8) open parenthesis
15a = 9a + 24
15a -9a = 9a -9a + 24 subtract 9a from both sides
6a = 24
6a/6 = 24/6 divide both sides by 6 to get a alone
a = 4
2006-11-16 09:05:41 · answer #3 · answered by Justin G 1 · 0⤊ 0⤋
15a=3(3a+8) solve for a?
15a=9a+24 simplify the equation
15a-9a=9a-9a+24 move all the variables of a to one side of the =
6a=24 then divide each side by 6 to end up with 1a so
a=4
to cross check, plug 4 into "a" in the equation and work the math
both sides should be equal
2006-11-16 09:00:49 · answer #4 · answered by Monica M 2 · 0⤊ 0⤋
Distribute the three(3a+8) so that you get 15a=9a+24. Then subtract 9a from each and each and every aspect which provide you with 6a=24. Then all you do is divide each and each and every aspect through 9 which provide you with a=4.
2016-11-24 23:02:47 · answer #5 · answered by binette 4 · 0⤊ 0⤋
15a = 3(3a+8) is an algebraic equation.
You solve it like this.
15a = 9a +24
6a = 24
a = 4
2006-11-16 08:59:45 · answer #6 · answered by curious 4 · 0⤊ 0⤋
15a=3(3a+8)
15a=9a+24 [distribute the 3]
-9a -9a
6a=24
a=4 [divide both sides by 6]
2006-11-16 08:58:40 · answer #7 · answered by m3_mY$3Lf_! 4 · 0⤊ 0⤋
15a=3(3a+8)
15a=9a+24
subtract 9a from both sides
6a=24
divide both side by 6
a=4
2006-11-16 09:06:17 · answer #8 · answered by Anonymous · 0⤊ 0⤋
ive just learned that!
i hate it !
but this is how you do it....
15a=3(3a+8)
first you do the distributive property.....
15a=9a+24
then......subtract 9a from 9a and 9a from 15a
then there is only 6a=24left on both sides
so you would do yhe oppositeand divide 6 from 6a which gives you nothing and divide 6 from 24 and it leaves you to the answer of 4
:)
please vot as best answer :)
2006-11-16 09:01:26 · answer #9 · answered by michelle =] 1 · 0⤊ 0⤋
15a = 3(3a+8) a =6
1st you distribute 3 making 3a 9a and 8 24
then you have 15a=9a+24
then combine like terms you do that by subtracting 9a from both sides.
then you have 6a=24
then you divide 6 on both sides and you have a=4
2006-11-16 08:59:25 · answer #10 · answered by Anonymous · 0⤊ 0⤋