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13.2 Homework Problems: Solving Systems of Equations Using Substitution and Elimination

1. Solve the following systems of equations using substitution

a.      8x – y = 29

2x + y = 11

b.      6r – 5s = 12

s + 6r = 48

c.      3x + 2y = 0

5x – 2y = 8

d.      2x + 2y = 15

x + y = 3

e.      ½ x + y = -4

3x – 4y = 6

f.      x = 3y + 4

y = 6 – 2x

g.      3y + z = 1

6y + 2z = 3

h.      [latex]\frac{1}{6}x\ -\ \frac{1}{12}y\ =-\frac{13}{6}[/latex]

[latex]\frac{1}{5}x\ +\ \frac{1}{4}y\ =\ 2[/latex]

 

2. Solve the systems of equation using elimination

a.      x + 4y = 11

5x – 2y = 11

b.      3x – 2y = 1

2x + y = 10

c.      2x + 3y = 16

x – y = -9

d.      2x + y = 1

5x + 3y = 6

e.      2x + 7y = 11

3x – y = 4

f.      3x = 15 + 2y

5x + 6y = 3

g.      3w = 13 + 5z

4w – 7z – 17 = 0

h.      29.1x – 47.6y = 42.8

11.5x + 72.7y = 25.8

 

Unit 13.2 Homework Printable Copy

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