Posted by Dawn on .
Please help me solve:
yx=5
2x2y=10
&
5X+6y=14
3y+x=7

Substitution Method 
bobpursley,
The first set cannot be solved, the two lines represented in the equations are parallel, and have no solution.
The second set, the second equation tells us that x= 3y+7, put that in the first equation
5(3y+7)+6y=14
15y+6y=1435 solve for y 
Substitution Method 
loren,
21y=21 21y/21=21/21 y=1