math
posted by HELP me please on .
i only need help on these two:
*2/3y=10+4x
5x=1/3y8
*5x=4y30
2x+3y=12
DIRECTIONS:use linear combinations to solve the system of linear equations.. thanks :)

I suggest you study the two answers given before and proceed with solving the remainder. This way, you will have no problems to face your exams.
One of the answers is:
http://www.jiskha.com/display.cgi?id=1295847952 
Have you tried substitution?
In the second problem,
x = 6  (3/2)y
30 (15/2)y = 4y 30
y = 0
5x = 30
x = 6