Ca someone tell me how to do this
20. Solve 3/x + 5/x= -4
A. x=-1/2
B. x=2
C. x=1/2
D.x=-2

Question

Ca someone tell me how to do this
20.   Solve 3/x + 5/x= -4
A. x=-1/2
B. x=2
C. x=1/2
D.x=-2

anonymous · Answer

you have to isolate x, or, get x by itself.
currently x is in the denominator of two terms.  you must:
1.  group the denominator (Common Denominators)
2.  Bring the x to the numerator (cross multiplication or reciprocals)
3.  clear any coefficients

anonymous · Answer

Don't get caught up with x being in the denominator. This is just like elementary math. Fractions with the same denominator can be added

campbell_st · Answer

well you have 

$$\frac{3}{x} + \frac{5}{x} = -$$

your fractions have the same denominator so add the numerators

$$\frac{8}{x} = -4$$

multiply both sides by x

$$8 = -4x$$

just solve for x

anonymous · Answer

i got x=2

campbell_st · Answer

ummm I think there is a problem... 

8/(-4)  is not 2

anonymous · Answer

its -2

campbell_st · Answer

thats correct

anonymous · Answer

Thank you