Thursday

April 24, 2014

April 24, 2014

Posted by **Angela** on Friday, February 22, 2013 at 11:03am.

5/x-2 + 2/x+5 = 4/x^2+3x-10

not sure i know how to do this

- Math -
**JJ**, Friday, February 22, 2013 at 11:16amDo you mean 5/(x-2) plus 2/(x+5) =

4/(x^2 + 3x -10)

To do this you either need a common denominator or to clear denominators.

I have to check the factors of the denomonators.

(x^2 + 3x -10) factors to (x+5)(x-2)

5/(x-2) needs to be multiplied by (x+5)/(x+5)

2/(x+5) needs to be multiplied by (x+2)/(x+2)

Can you finish from here?

- Math -
**Angela**, Friday, February 22, 2013 at 11:33amyes that is what i meant.

i think i am still confused cause when i do that i got (7x+29)/(2x^2+6x-20)

which i dont think is right

- Math -
**JJ**, Friday, February 22, 2013 at 1:13pm7x + 29 is correct in the numerator.

the denominator will be x^2 + 3x - 10

Your mistake is that you added the denominators. You have to keep the denominator and add the numerators when working with fractions. Like 1/5 + 2/5 = 3/5

this is the same denominator that you have on the other side of the equation.

We are saying two fractions are equal, since there denominators are equal, then their numerators must also be equal.

Set 7x +29 = 4 and solve for x.

- Math -
**angela**, Friday, February 22, 2013 at 6:11pmfor x i got -3.57 is this correct?

**Related Questions**

Math - Solve the system by addition or substitution. 3x – 4y = 8 6x – 2y = 10 ...

SAT math - 1. If square root of 3x-11 +10 = 17, find the value of 10 x . I don't...

MATH PLEASEEEEE - I have a question, if f(x)=x/2 and g(x)=3x+1 find: a) (f+g)(x...

math correction - solve: x -8 = 4 + 8 +8 x = 12 my answer is x = 12 solve: 80 = ...

Math - Factor the polynomial P(x)=x^3-2x^2-13x-10. Then solve the equation P(x)=...

Math ASAP - how do you solve 5x/2-10=x/4-1 and..... 3x/10=9/5 5x/2 -10 = x/4 - 1...

math - 3x-4=-2(3x+5) 3x-4=-2(3x+5) clear the fraction. 3x-4=-6x-10 add+6x+4 to ...

help math ahhhh - For questions 9–10, solve each system by elimination. 9. 5x + ...

algebra - Solve the system by graphing. 3x+y=6 3x-y=0 I'm kind of unsure about ...

math - which of the followin has a solution set of {-5,2} A)X^2+3X-10=0 B)X^2-3X...