Rearrange the equation so u is the independent variable.

4u+8w=-3u+2w

w = __

Rearrange the equation so m is the independent variable.

-2m - 5n = 7m - 3n

w = 7u/6

u = 6w/7

m = 2n/-9

n = - 9m/2

Step-by-step explanation:

4u + 8w = - 3u + 2w

4u - 4u + 8w = - 3u - 4u + 2w

8w - 2w = - 7u + 2w - 2w

6w = - 7u

w = 7u/6

u = 6w/7

AND

-2m - 5n = 7m - 3n

-2m - 7m - 5n = 7m - 7m - 3n

-9m - 5n + 5n = - 3n + 5n

-9m = 2n

m = 2n/-9

n = - 9m/2