Question

1/2x = -9 what to do help

Answer 1

Explanation:

I'm assuming that you are solving for x, since there's nothing else you can do with this mathematically.

`(1)/(2)x=-9` and the goal is to get the x all alone. So we have to lose the fraction. Do that by multiplying by the reciprocal of 1/2 which is 2/1 (a reciprocal is just a fraction flipped upside down). BUT...because this is an equation, what you do to the left side has to be done to the right side too. Like this:

`((2)/(1))(1)/(2)x=(-9)/(1)((2)/(1))`

On the left, everything cancels out but the x (which is why we do this), and on the right we multiply straight across the top and straight across the bottom to get

`x=(-18)/(1)` which is

x = -18

Answer 2

1

2

=

−

9

\frac{1}{2}x=-9

21x=−9

1

2

=

−

9