Systems of Equations by Substitution

Substitution

100

x = -2

x - 3y = -11

(-2,3)

200

y = 3x - 10

y = 2x - 5

(-3,-1)

300

x = -2y + 4

x - y = 4

(4, 0)

400

4x =12

y = 8 - 2x

(3,2)

500

y = -2x + 4

-7x + y = -14

(2,0)

Substitution

100

-4x - 2y = 20

y = 2

(-6,2)

200

x = 5

-5x + 7y = -18

(5,1)

300

x = -5

-3x - 3y = 3

(-5,4)

400

y = 3

-x + 2y = 5

(1,3)

500

5y = x + 17

x = 2y -11

(-7,2)

Substitution

100

x = 2

3x + y = 9

(2,3)

200

y = 3 - x

x + 4y = 6

(2,1)

300

x + y = 31

x = y - 3

(14,17)

400

3x + 27 = 7

5 = y 

(-1,5)

500

-4x = 3y + 8

x = 1

(1,-4)

Substitution

100

y = -1

2x = 5 - y

(3,-1)

200

y = 2x 

x + y = 6

(2,4)

300

y = 5x - 36

x = 8

(8,4)

400

2y = 2

x = 5y - 11

(-6,1)

500

4x + 3y = 38

x = y + 6 

(8,2)

Substitution

100

x = -3

y = -x - 4

(-3,-1)

200

y + 3x = -5

y = x - 1

(-1,-2)

300

-7x - 6y = 16

x = -4

(-4,2)

400

3x = 5y + 2

y = 2

(4,2)

500

-4x = 5y -31

x = 9

(9, -1)