Substitution
3x - y = 18
y = x - 4
( 7, 3 )
- 4x + 3y = -3
4x - 5y = 5
( 0, -1 )
5x + 6y = -8
2x + 3y = -5
( 2, -3)
5x + 7y = 2
-2x + 7y = 9
Elimination ( - ); ( -1 , 1)
x + 3y = 9
x + y = 1
( - 3, 4 )
4x + 6y = 32
3x - 6y = 3
( 5, 2)
6a + 2b = 2
4a + 3b = 8
( -1, 4)
5x - y = 17
3x + 2y = 5
Substitution; ( 3, -2)
y = 2x - 4
-6x + 3y = -12
Infinite
5m - p = 7
7m - p = 11
( 2, 3)
2x - y = 4
7x + 3y = 27
( 3, 2)
3x + 7y = 4
5x - 7y = -12
Elimination ( + ); ( -1 , 1 )
3x + y = 6
4x + 2y = 8
( 2, 0 )
8x + 5y = 38
- 8x + 2y = 4
( 1, 6)
9a - 2b = -8
- 7a + 3b = 12
( 0 , 4)
3x + 4y = 11
2x + y = -1
substitution; ( -3, 5 )
2x+ 3y = 4
4x + 6y = 9
No solution
- 3x - 8y = -24
3x - 5y = 4.5
( 4 , 1.5)
- 4x + 2y = 0
10x + 3y = 8
( 1/2 , 1)
3x - 4y = -5
-3x + 2y = 3
Elimination( + ); ( - 1/3 , 1)