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Systems of Equations Word Problems
By yourteachermathhelp
For a complete lesson on systems of equations word problems, go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn to solve number and value word problems using a system of linear equations, as demonstrated in the following problem. Rodolfo has a total of 17 dimes and quarters worth $3.05. How many of each coin does he have? The two variables used in this problem are d, number of dimes, and q, number of quarters. Since Rodolfo has a total 17 dimes and quarters, one equation is d + q = 17. Since the value of his coins is $3.05, the other equation is 10d + 25q = 305. Note that since d represents the number of dimes, 10d represents the value of the dimes. And since q represents the number of quarters, 25q represents the value of the quarters.
12 - Solving 3-Variable Linear Systems of Equations - Substitution Method
By Math and Science
Quality Math And Science Videos that feature step-by-step example problems!
14 - Solve Quadratic Systems of Equations by Addition - Part 1 (Simultaneous Equations)
By Math and Science
Quality Math And Science Videos that feature step-by-step example problems!
05 - Quadratic Systems of Equations (With Lines, Circles, Ellipses, Parabolas & Hyperbolas)
By Math and Science
Quality Math And Science Videos that feature step-by-step example problems!