illiana16 illiana16

12-06-2018
Mathematics

contestada

What is the value of x in the equation-6/7 = -x/84?

A. -98
B. -72
C. 72
D. 98

Respuesta :

GoddessofDork GoddessofDork

12-06-2018

So for this equation, all you have to do is multiply by the reciprocal of [tex]- \frac{1}{84} [/tex] , aka -84, on each side and it'll look like this:

[tex](-\frac{84}{1}) * (-\frac{6}{7}) = -\frac{x}{84} *(-\frac{84}{1}) \\ \\ \frac{504}{7} = \frac{72}{1}=72=x[/tex]

tl;dr: The correct option is C.

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