Asked by Dawn
Please help me solve:
y-x=5
2x-2y=10
&
5X+6y=14
-3y+x=7
y-x=5
2x-2y=10
&
5X+6y=14
-3y+x=7
Answers
Answered by
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=14-35 solve for y
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=14-35 solve for y
Answered by
loren
21y=-21 21y/21=-21/21 y=-1
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