Algebra-1

To solve the system of equations by substitution, we'll solve one equation for one variable and substitute it into the other equation. Let's solve equation 2) for y:

Given equations:
1) 3x + 2y = 16
2) 7x + y = 19

Solve equation 2) for y:
y = 19 - 7x

Substitute y = 19 - 7x into equation 1):
3x + 2(19 - 7x) = 16

Simplify:
3x + 38 - 14x = 16
-11x + ...