Question 980209
Hi there,
-7/3u+4/5=-2/3u-4 
Collect like terms
-7/3u + 2/3u = -4 - 4/5
-5/3u = -20/5(4) - 4/5
-5/3u = -24/5
Cross multiply
-5 x 5 = 3u x -24
-25 = -72u
u = 25/72
Hope this helps:-)