Question

What? a/-21 + 8 = 4

What's a? From my research, that answer would be 1.9047619, but I hear that's wrong....

Answer 1

\[\frac{a}{-21}+8=4\]
is that what you're asking? or is it
\[\frac{a}{-21+8}=4\]

Answer 2

The former.

Answer 3

And it's 2.1

Answer 4

\[\frac{a}{-2.1}+8=4\]
\[-\frac{a}{2.1}=-4\]
\[a=8.4\]
\[a=\frac{42}{5}\]

Answer 5

Thanks