Start with the second equation, which tells you that t = 4.
If t = 4, then you can rewrite the first equation as follows (and solve):
4u – u = 18
3u = 18
u = 6
from Tumblr https://ift.tt/2oP7c55
Start with the second equation, which tells you that t = 4.
If t = 4, then you can rewrite the first equation as follows (and solve):
4u – u = 18
3u = 18
u = 6
from Tumblr https://ift.tt/2oP7c55