Question

Solve. Please/thanks!
-2/z + 1/4z = 7/z+10

A) z=10/3
B) z=-2
C) z=2
D) z=-5/4

Answer 1

What have you done so far regarding this question?

Answer 2

-2/z+1/4z=7/z=10
multiply both sides by 4z
:::::-8+1=28+40z
40z=-35
z=-7/8

Answer 3

-2/z+1/4z=7/z+10
on the problem above this is the correct original problem ---sorry
try to find a common denominator- which is 4z
Is the correct answer???

Answer 4

\[\large -\frac{2}{z}+\frac{1}{4z}=\frac{7}{z+10}\]
\[\large \frac{-8z+z}{4z^2}=\frac{7}{z+10}\]
\[\large -\frac{7}{4z}=\frac{7}{z+10}\]
\[\large -7(z+10)=28z\]
\[\large -7z-70=28z\]
\[\large 35z=-70\]
\[\large z=-2\]