Problem: y=6x y=5x+7
solve each system by subsitution
y = 6x
y = 5x + 7
Substitute the value of y from the first
equation into the second equation.
y = 5x + 7
6x = 5x + 7
6x - 5x = 5x + 7 - 5x
x = 7
Now, you can solve for y.
y = 6x
y = 6(7)
y = 42
Use the other equation to check.
y = 5x + 7
42 = 5(7) + 7
42 = 35 + 7
42 = 42
Answer: x = 7, y = 42