Download Elimination - 3

Foundations: Friday, February 10, 2017
Name ___________________________________
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Elimination - 3
Period ____
Let's do these together. Multiply one equation, then add or subtract to solve each system by
elimination.
1)
2)
-10x - 14 y = -20
-3x - 7 y = 8
3)
-18x + 6 y = 12
-9x + 3 y = 6
4)
18x + 6 y = -28
-9x - 3 y = 18
4x + 3 y = -4
12x + 4 y = -12
Your turn. Multiply one equation, then add or subtract to solve each system by elimination.
5)
6)
10x - 7 y = -20
-7x - 14 y = 14
7)
-8x + 6 y = 28
7x - 2 y = -18
8)
-x + 7 y = -13
-8x + 6 y = -4
9)
8x - y = -23
-x + 2 y = 1
10)
-2x - 18 y = -4
x - 9y = 2
-7x + 8 y = 16
-14x + 4 y = 8
Worksheet by Kuta Software LLC
-1-
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11)
12)
x + 7 y = -22
-6x - 6 y = 24
13)
-x + y = 7
-3x + 3 y = 21
14)
-5x + 5 y = 30
10x + y = 6
15)
-10x - 4 y = -9
5x + 2 y = 3
16)
12x + 8 y = -4
-6x + 10 y = -26
17)
-8x + 4 y = -24
-16x + 3 y = 2
18)
14x - 16 y = -14
-7x + 8 y = 7
19)
14x + 8 y = 8
-7x - 6 y = -20
20)
8x - 7 y = 19
16x - 14 y = 28
21)
12x - y = -2
4x + 7 y = 14
22)
x + 7y = 4
3x - 10 y = -19
-6x - y = 1
-3x - 3 y = 18
Worksheet by Kuta Software LLC
-2-
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Foundations: Friday, February 10, 2017
Name ___________________________________
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Elimination - 3
Period ____
Let's do these together. Multiply one equation, then add or subtract to solve each system by
elimination.
1)
2)
-10x - 14 y = -20
-3x - 7 y = 8
-18x + 6 y = 12
-9x + 3 y = 6
(9, -5)
3)
Infinite number of solutions
4)
18x + 6 y = -28
-9x - 3 y = 18
4x + 3 y = -4
12x + 4 y = -12
(-1, 0)
No solution
Your turn. Multiply one equation, then add or subtract to solve each system by elimination.
5)
6)
10x - 7 y = -20
-7x - 14 y = 14
-8x + 6 y = 28
7x - 2 y = -18
(-2, 0)
7)
(-2, 2)
8)
-x + 7 y = -13
-8x + 6 y = -4
8x - y = -23
-x + 2 y = 1
(-1, -2)
9)
(-3, -1)
10)
-2x - 18 y = -4
x - 9y = 2
-7x + 8 y = 16
-14x + 4 y = 8
(0, 2)
(2, 0)
Worksheet by Kuta Software LLC
-1-
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11)
12)
x + 7 y = -22
-6x - 6 y = 24
-x + y = 7
-3x + 3 y = 21
(-1, -3)
Infinite number of solutions
13)
14)
-5x + 5 y = 30
10x + y = 6
-10x - 4 y = -9
5x + 2 y = 3
(0, 6)
No solution
15)
16)
12x + 8 y = -4
-6x + 10 y = -26
-8x + 4 y = -24
-16x + 3 y = 2
(1, -2)
(-2, -10)
17)
18)
14x - 16 y = -14
-7x + 8 y = 7
14x + 8 y = 8
-7x - 6 y = -20
Infinite number of solutions
(-4, 8)
19)
20)
8x - 7 y = 19
16x - 14 y = 28
12x - y = -2
4x + 7 y = 14
No solution
(0, 2)
21)
22)
x + 7y = 4
3x - 10 y = -19
-6x - y = 1
-3x - 3 y = 18
(-3, 1)
(1, -7)
Worksheet by Kuta Software LLC
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