How do you evaluate -1- 2v = - 6v - 19+ 2v?

1 Answer
Sep 13, 2017

-9

Explanation:

−1−2v=−6v−19+2v is also the same as

−1color(pink)+−2v=−6vcolor(pink)+−19+2v. It is also the same as

color(pink)2color(pink)vcolor(pink)-color(pink)1=−6v+color(pink)2color(pink)vcolor(pink)+color(pink)(-19)

So,

−2v−1=color(pink)((−6v+2v))+−19

Which is also

−2v−1=color(pink)−color(pink)4color(pink)v+−19

−2v−1=−4vcolor(pink)−19

Then we will add 4v to both sides.

−2v−1color(pink)+color(pink)4color(pink)v=−4v−19color(pink)+color(pink)4color(pink)v

So,

2v−1=−19

Then we add 1 to both sides.

2v−1color(pink)+color(pink)1=−19color(pink)+color(pink)1

That means 2v=−18

Divide both sides by 2

:. v=-9