Answer:
2
Step-by-step explanation:
For example:
x+2y=7
6x+7y=2
__________
x=7-2y *
6*(7-2y)+7y=2 **
__________
x=7-2y
42-12y+7y=2
__________
x=7-2y
-5y=-40
__________
x=7-2y
y=8
x=-9
Answer:
zero property
Step-by-step explanation:
if it equals zero its zero property
the new price of the bike is $380
Answer:
x=11, y=8/3
Step-by-step explanation:
Consider quadrilateral LMNO. If this quadrilateral MUST BE a parallelogram, then
LM=NO
and
LO=MN
Thus,

Solve this system of two equations. From the first equation:

Substitute it into the second equation:
