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Solving a System of Linear Equations in Two Variables  Problem 12
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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.
Sample Problems (18)
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Solving a System of Linear Equations in Two Variables
Problem 1 11,737 viewsSolve the system:
4x − 2y = 7x + 2y = 3 
Solving a System of Linear Equations in Two Variables
Problem 2 7,303 viewsSolve the system:
2x − 4y = 35x + 10y = 7 
Solving a System of Linear Equations in Two Variables
Problem 3 5,804 viewsSolve the system:
6x + 21y = 12x + 7 y = 2 2 
Solving a System of Linear Equations in Two Variables
Problem 4 1,162 views 
Solving a System of Linear Equations in Two Variables
Problem 5 1,067 views 
Solving a System of Linear Equations in Two Variables
Problem 6 1,028 views 
Solving a System of Linear Equations in Two Variables
Problem 7 872 views 
Solving a System of Linear Equations in Two Variables
Problem 8 977 views 
Solving a System of Linear Equations in Two Variables
Problem 9 792 views 
Solving a System of Linear Equations in Two Variables
Problem 10 947 views 
Solving a System of Linear Equations in Two Variables
Problem 11 845 views 
Solving a System of Linear Equations in Two Variables
Problem 12 677 views 
Solving a System of Linear Equations in Two Variables
Problem 13 657 views 
Solving a System of Linear Equations in Two Variables
Problem 14 570 views 
Solving a System of Linear Equations in Two Variables
Problem 15 597 views 
Solving a System of Linear Equations in Two Variables
Problem 16 568 views 
Solving a System of Linear Equations in Two Variables
Problem 17 564 views 
Solving a System of Linear Equations in Two Variables
Problem 18 609 views
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