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ivann1987 [24]
3 years ago
14

Solve for x: -2x+14=20

Mathematics
2 answers:
stiv31 [10]3 years ago
8 0

Answer:

x = -3

Step-by-step explanation:

-2x + 14 = 20

Subtract 14 from each side.

-2x = 6

Divide both sides by -2

x = -3

Tatiana [17]3 years ago
7 0

Answer:

-3

Step-by-step explanation:

First, subtract 14 from 20. 20-14=6. And then divide -2 on each side. You then have to do 6/-2, when a postive number divides a negative, you change the sign. So you would get x=-3

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Solve for m 1/C+1/m=1/z
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Answer:  " m = zC / (C − z) " .
___________________________________
Explanation:
_________________________
Given:  1/C + 1/m = 1/z ;  Solve for "m".

Subtract  "1/C" from each side of the equation:
____________________________________
1/C + 1/m − 1/C = 1/z − 1/C  ;

to get:  1/m = 1/z − 1/C ;
____________________________________
Now, multiply the ENTIRE EQUATION (both sides); by "(mzC"); to get ride of the fractions:
_________________

mzC {1/m = 1/z − 1/C} ;

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Factor out an "m" on the "right-hand side" of the equation:

zC = m(C − z) ;  Divide EACH side of the equation by "(C − z)" ; to isolate "m" on one side of the equation;

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