Substitution Method

What is the second step?

Substitute

What is the first step? x = 16 - 4y 3x + 4y = 8

x = 16 -4y

What is the first step? x = 2y - 6 4x + 6y = 4

x = 2y - 6

What's the first step? x = 5 y = x +1

x =5

What is the first step? 3x + y = -7 -2x + 4y = 0

y = -3x - 7

What is the first step 6x + y = 4 x - 4y = 19

y = -6x + 4

What is the first step? 2x + 8y = 20 y = 2

y = 2

What is the first step y = 2x -1 2x + y = 3

y = 2x -1

What's the first step? y = 3x + 2 x + 2y = 11

y = 3x + 2

Substitute x = 16 - 4y 3x + 4y = 8

3(16-4y) + 4y = 8

Step 1

Find which variable is alone or get one of the variables alone

Substitute x = y + 3 2x - y = 5

2(y + 3) - y = 5