![]() ![]() Substitute 84.91 – 2y for x in the other equation. ![]() How do you decide which equation and which variable to choose? You can use either equation to solve for either variable. Solve one of the equations for one variable. There is no number of hours for which Seiko’s is the same at both studios.Įxample 3 : Solve the system –2y – 3x = –84.91 and 3x + 6y = 254.73 by using Substitution. The result is not a true statement, so the system has no solution. Use substitution to solve one of the equations for one variable. Let x equal the number of hours and y equal Seiko’s cos Write a system of linear equations to represent the situation. How can Gemma determine the number of each type of ticket that was sold on Saturday? On Saturday, she sells 800 tickets and collects a total of $7,680. Use Substitution to Solve a System of Equations with One Solution:
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