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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 11,024 viewsSolve the system:
4x − 2y = 7x + 2y = 3 
Solving a System of Linear Equations in Two Variables
Problem 2 6,909 viewsSolve the system:
2x − 4y = 35x + 10y = 7 
Solving a System of Linear Equations in Two Variables
Problem 3 5,533 viewsSolve the system:
6x + 21y = 12x + 7 y = 2 2 
Solving a System of Linear Equations in Two Variables
Problem 4 968 views 
Solving a System of Linear Equations in Two Variables
Problem 5 897 views 
Solving a System of Linear Equations in Two Variables
Problem 6 881 views 
Solving a System of Linear Equations in Two Variables
Problem 7 743 views 
Solving a System of Linear Equations in Two Variables
Problem 8 812 views 
Solving a System of Linear Equations in Two Variables
Problem 9 680 views 
Solving a System of Linear Equations in Two Variables
Problem 10 781 views 
Solving a System of Linear Equations in Two Variables
Problem 11 705 views 
Solving a System of Linear Equations in Two Variables
Problem 12 524 views 
Solving a System of Linear Equations in Two Variables
Problem 13 533 views 
Solving a System of Linear Equations in Two Variables
Problem 14 464 views 
Solving a System of Linear Equations in Two Variables
Problem 15 492 views 
Solving a System of Linear Equations in Two Variables
Problem 16 459 views 
Solving a System of Linear Equations in Two Variables
Problem 17 463 views 
Solving a System of Linear Equations in Two Variables
Problem 18 490 views
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