Question

How do you solve `-7/9s = -1/3`?

Answer 1

See the entire solution process below:

Explanation:

Multiply each side of the equation by `-color(red)(9)/color(blue)(7)` to solve for `s` while keeping the equation balanced:

`-color(red)(9)/color(blue)(7) xx -7/9s = -color(red)(9)/color(blue)(7) xx -1/3`

`cancel(-color(red)(9))/cancel(color(blue)(7)) xx color(blue)(cancel(color(black)(-7)))/color(red)(cancel(color(black)(9)))s = -color(red)(3 xx 3)/color(blue)(7) xx -1/3`

`s = -color(red)(cancel(3) xx 3)/color(blue)(7) xx -1/color(red)(cancel(color(black)(3)))`

`s = -3/7 xx -1`

`s = 3/7`