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Solving a System of Linear Equations in Two Variables  Problem 5
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Solving a System of Linear Equations in Two Variables  Problem 4
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
Substitution is a technique for solving by getting one variable by itself in one equation, and substituting the resulting expression in to the other equation. This creates only one equation with only one variable. Use substitution if you see a coefficient of one in either of your original equations.
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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 10,798 viewsSolve the system:
4x − 2y = 7x + 2y = 3 
Solving a System of Linear Equations in Two Variables
Problem 2 6,784 viewsSolve the system:
2x − 4y = 35x + 10y = 7 
Solving a System of Linear Equations in Two Variables
Problem 3 5,445 viewsSolve the system:
6x + 21y = 12x + 7 y = 2 2 
Solving a System of Linear Equations in Two Variables
Problem 4 895 views 
Solving a System of Linear Equations in Two Variables
Problem 5 839 views 
Solving a System of Linear Equations in Two Variables
Problem 6 831 views 
Solving a System of Linear Equations in Two Variables
Problem 7 694 views 
Solving a System of Linear Equations in Two Variables
Problem 8 764 views 
Solving a System of Linear Equations in Two Variables
Problem 9 631 views 
Solving a System of Linear Equations in Two Variables
Problem 10 723 views 
Solving a System of Linear Equations in Two Variables
Problem 11 655 views 
Solving a System of Linear Equations in Two Variables
Problem 12 472 views 
Solving a System of Linear Equations in Two Variables
Problem 13 486 views 
Solving a System of Linear Equations in Two Variables
Problem 14 420 views 
Solving a System of Linear Equations in Two Variables
Problem 15 449 views 
Solving a System of Linear Equations in Two Variables
Problem 16 415 views 
Solving a System of Linear Equations in Two Variables
Problem 17 411 views 
Solving a System of Linear Equations in Two Variables
Problem 18 447 views
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