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Solving a System of Linear Equations in Two Variables  Problem 11
Alissa Fong
Alissa Fong
MA, Stanford University
Teaching in the San Francisco Bay Area
Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts
One strategy for approaching mixture problems is to write two equations: one that represents amount of item only, and the second that represents amount times cost of each item. From there, you can choose to solve by elimination or substitution. Be sure to clearly define what your variables represent so you can interpret your solution in the problem context.
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Alissa Fong
M.A. in Secondary Mathematics, Stanford University
B.S., Stanford University
Alissa has a quirky sense of humor and a relatable personality that make it easy for students to pay attention and understand the material. She has all the math tips and tricks students are looking for.
Your tutorials are good and you have a personality as well. I hope you have more advanced college level stuff, because I like the way you teach.”
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Sample Problems (18)
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Solving a System of Linear Equations in Two Variables
Problem 1 10,487 viewsSolve the system:
4x − 2y = 7x + 2y = 3 
Solving a System of Linear Equations in Two Variables
Problem 2 6,607 viewsSolve the system:
2x − 4y = 35x + 10y = 7 
Solving a System of Linear Equations in Two Variables
Problem 3 5,291 viewsSolve the system:
6x + 21y = 12x + 7 y = 2 2 
Solving a System of Linear Equations in Two Variables
Problem 4 801 views 
Solving a System of Linear Equations in Two Variables
Problem 5 751 views 
Solving a System of Linear Equations in Two Variables
Problem 6 742 views 
Solving a System of Linear Equations in Two Variables
Problem 7 611 views 
Solving a System of Linear Equations in Two Variables
Problem 8 672 views 
Solving a System of Linear Equations in Two Variables
Problem 9 567 views 
Solving a System of Linear Equations in Two Variables
Problem 10 622 views 
Solving a System of Linear Equations in Two Variables
Problem 11 557 views 
Solving a System of Linear Equations in Two Variables
Problem 12 391 views 
Solving a System of Linear Equations in Two Variables
Problem 13 405 views 
Solving a System of Linear Equations in Two Variables
Problem 14 354 views 
Solving a System of Linear Equations in Two Variables
Problem 15 380 views 
Solving a System of Linear Equations in Two Variables
Problem 16 367 views 
Solving a System of Linear Equations in Two Variables
Problem 17 336 views 
Solving a System of Linear Equations in Two Variables
Problem 18 380 views
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