Asked by Laura
Solve the system using elimination.
2x – 2y = –8
x + 2y = –1
And this one:
Solve the system using elimination.
3x – y = 28
3x + y = 14
Pleease help me :(
2x – 2y = –8
x + 2y = –1
And this one:
Solve the system using elimination.
3x – y = 28
3x + y = 14
Pleease help me :(
Answers
Answered by
Reiny
1st:
add them
3x = -9
x = -3
back into #2
-3 + 2y = -1
2y = 2
y = 1
2nd:
add them
6x = 42
x = 7
in the 2nd:
21 + y = 14
y = -7
add them
3x = -9
x = -3
back into #2
-3 + 2y = -1
2y = 2
y = 1
2nd:
add them
6x = 42
x = 7
in the 2nd:
21 + y = 14
y = -7
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