Today was my first day in Algebra 2, and I really felt low in self steem since I coulnd't solve some fractions.

Here is one I din't understand:

fraction{3X}{X+2} + fraction{6X}{X+2}

Sorry for not using latex

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- Sep 6th 2011, 01:09 PMvaironxxrdAlgebra2 : Adding and subtracting like Denominators
Today was my first day in Algebra 2, and I really felt low in self steem since I coulnd't solve some fractions.

Here is one I din't understand:

fraction{3X}{X+2} + fraction{6X}{X+2}

Sorry for not using latex - Sep 6th 2011, 01:12 PManonimnystefyRe: Algebra2 : Adding and subtracting like Denominators
hi

since the denominators are same you just add the numerators:

$\displaystyle \frac{3x}{x-2}+\frac{6x}{x-2}=\frac{3x+6x}{x-2}=\frac{9x}{x-2}$ - Sep 6th 2011, 01:18 PMvaironxxrdRe: Algebra2 : Adding and subtracting like Denominators
- Sep 6th 2011, 02:08 PManonimnystefyRe: Algebra2 : Adding and subtracting like Denominators
You're welcome.

- Sep 6th 2011, 02:52 PMtheloserRe: Algebra2 : Adding and subtracting like Denominators
Just remember the rule:

$\displaystyle \frac{a}{b}+\frac{c}{b}=\frac{a+c}{b}$

When the b is the same you can add/subtract them if they are not the same you can't, only if you change both the b to the same denominator with LCD. - Sep 6th 2011, 06:00 PMvaironxxrdRe: Algebra2 : Adding and subtracting like Denominators
- Sep 6th 2011, 07:08 PMAckbeetRe: Algebra2 : Adding and subtracting like Denominators