Solution
Step 1:
Write the two equations:
2x + 3y = 12
2x + y = 6
2x = 6 - y
[tex]\begin{gathered} 6\text{ - y + 3y = 12} \\ 2y\text{ = 12 - 6} \\ \\ 2y\text{ = 6} \\ \\ y\text{ = 3} \end{gathered}[/tex]
Answer
The first step in solving by substitution would be to solve the second equation for x, since the coefficient is 2.
First
y = 6 - 2x
y = 3
