Question

3x - y = 2

y = x - 1
When the expression x - 1 is substituted into the first equation for y, the resulting equation is

Answer 1

Given.

3x - y = 2

Substitute x - 1 for variable y.

3x - x - 1 = 2 ← Resulting equation

Answer 2

see explanation

Explanation:

Given

3x - y = 2

Substitute y = x - 1 into the equation

3x - (x - 1) = 2

3x - x + 1 = 2 ← simplify left side

2x + 1 = 2 ← required equation after substitution