Simple
Medium
Difficult
100

Solve the system by elimination.

x + y = 5

x - y = 7

(6,-1)

100

Solve the system by elimination.

-4x - 2y = -12

2x + 4y = -12

(6,-6)

100

Solve the system by elimination.

5x + 4y = -30

3x - 9y = -18

(-6,0)

200

Solve the system by elimination.

x + y = -8

x - y = -2

(-5, -3)

200

Solve the system by elimination.

x - y = 11

4x + 2y = 38

(10,-1)

200

Solve the system by elimination.

-7x - 8y = 9

-4x + 9y = -22

(1,-2)

300

Solve the system by elimination.

2x + y = 4

2x - y = 12

(4,-4)

300

Solve the system by elimination.

-6x + 6y = 6

-6x + 3y = -12

(5,6)

300

Solve the system by elimination.

-4x - 2y = 14

-10x + 7y = -25

(-1, -5)