Question

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

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

Answer 1

So for this equation, all you have to do is multiply by the reciprocal of
`- (1)/(84)` , aka -84, on each side and it'll look like this:


`(-(84)/(1)) * (-(6)/(7)) = -(x)/(84) *(-(84)/(1)) \\ \\ (504)/(7) = (72)/(1)=72=x`

tl;dr: The correct option is C.