## anonymous 5 years ago hi i need help with rationals

1. anonymous

$4/x+1=3/x+2$

2. anonymous

Is that: a) $$\frac{4}{x} +1 = \frac{3}{x} + 2$$ b)$$\frac{4}{x+1} = \frac{3}{x+2}$$ c) neither a nor b

3. anonymous

b

4. anonymous

Multiply both sides by (x+1)(x+2). Then solve in the usual way. You just need to stipulate that $$x\ne-1 \text{ and } x\ne -2$$.

5. anonymous

:( i stil not understand

6. anonymous

$\frac{4}{x+1}=\frac{3}{x+2}$ $(x+1)(x+2) *\frac{4}{x+1}=\frac{3}{x+2} * (x+1)(x+2)$

7. anonymous

then the answer should be 7x+9 over (x+1)(x+2) im i correct.?

8. anonymous

No.. There should be no denominator when you're done You should simply have x = a number.

9. anonymous

$\frac{(x+1)(x+2)}{1}*\frac{4}{x+1} = \frac{3}{x+2}*\frac{(x+1)(x+2)}{1}$ $4(x+2) = 3(x+1)$

10. anonymous

oh gawsh.!

11. anonymous

And continue from there.

12. anonymous

ohkay i multiplied nd got 4x+8=3x+3

13. anonymous

x=5 correct

14. anonymous

I have x = -5

15. anonymous

yes thank you sooo much.!