<img src="https://tex.z-dn.net/?f=-3%2Fz%2B7%2F4z%3D5%2Fz-25" id="TexFormula1" title="-3/z+7/4z=5/z-25" alt="-3/z+7/4z=5/z-25" a

dsp73

2 years ago

lign="absmiddle" class="latex-formula">

Mathematics

2 answers:

RSB [31]2 years ago

5 0

Answer:

z = 5

Step-by-step explanation:

simplify

5/(z-25) first

turning it into

((0 - 3/z) + 7/4z) - 5/(z - 25) = 0

then simplify 7/4z

((0 - 3/z) + 7/4z) - 5/(z-25) = 0

when the fractions denominator is 0 then the numerator must be 0

turning the equation into

-25 * (z - 5) = 0

solve

-25 = 0

something that is not zero cannot equal zero.

z - 5 = 0

5 - 5 = 0

z = 5

hope this helps:)

ycow [4]2 years ago

4 0

Answer:

z = 1/4

Step-by-step explanation:

See attached image

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