systems by substitution

Elementary Algebra
Assignment #36

Solve the following systems by substitution:

1.

2.

3.

2x + y = 6
y = x - 3

6x - 4y = 34
y = 3x - 4

4x - y = 4
y = 2x 4.

5. x - 5y = -1
x = 2y - 4

5x + 2y = 15
y = 3x + 2

email