## anonymous one year ago What is the sum of the rational expressions below? 3x+1-2x+7x/x+5 A. 10x+1/3x+5 B. 17x^2+16x+5/2x^2+10x C. 3x^2+16x+5/2x^2+10x D.17x^2+16x+5/2x^2+5

1. DanJS

retype it, something is wrong in the original expression (x/x)=1

2. anonymous

What is the sum of the rational expressions below? 3x+1/2x+7x/x+5

3. DanJS

$3x+\frac{ 1 }{ 2 }x+\frac{ 7x }{ x }+5$ that?

4. anonymous

|dw:1435759144233:dw|

5. DanJS

ok... multiply everything by the common denominator first,,, which is the product of the two... (2x)*(x+5)

6. DanJS

turns it into... (x+5)(3x+1) + (2x)(7x) can you take it from there.?

7. anonymous

yup

8. DanJS

remember all that is still over the common denominator

9. anonymous

i will

10. DanJS

k gl

11. anonymous

thx