System of Linear Equations - Substitution Practice Problems Online

$x$ and $y$ are real numbers that satisfy $x = 7$ and $x + y = 9$ . What is the value of $y$ ?

$x$ and $y$ are real numbers that satisfy $2x = 50$ and $x + y = 40$ . What is the value of $y$ ?

爱丽丝有一个Facebook股票和3 Twitter获得stocks, and her portfolio is worth $150.
Brenda has 2 Facebook stocks and 1 Twitter stock, and her portfolio is worth $250.
Candice has 3 Facebook stocks and 1 Twitter stock. How much is her portfolio worth?

On Black Friday,
Joel bought 1 phone and 1 PS4 for $500, and
Kelvin bought 2 phones and 2 PS4's for $1000.
Linus bought 2 phones and 1 PS4.

Can we determine how much Linus paid?

$x$ and $y$ are real numbers that satisfy $5x -8 = 7$ and $3x - 2y = - 9$ . What is the value of $y$ ?

Intro

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System of Linear Equations - Substitution

Solving Equations

Intro

Concept Quizzes

Challenge Quizzes

System of Linear Equations - Substitution