Final answer:
To solve the given system using substitution, we substitute the second equation for y into the first, solve for x, and then back-substitute to find y. The additional information given doesn't relate to solving the system.
Step-by-step explanation:
To solve the system of equations using substitution, follow these steps:
- Rewrite the second equation y = 2/3x - 4 and substitute this expression for y in the first equation, which gives us 1/3x + 2(2/3x - 4) = 1.
- Simplify and solve the resulting equation for x.
- Once x is found, substitute this value back into the second equation to find y.
However, it should be noted that the information provided in the question does not seem to directly relate to the steps required to solve the system of equations given. The context provided appears to be discussing a chemical equilibrium problem where a quadratic equation is solved to find the concentration of y. Additional information on the balance of chemical equations and approximations is mentioned but doesn't correspond to solving the system of equations at hand.