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Ch. 5 - Systems of Equations and Inequalities
Blitzer - College Algebra 8th Edition
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Tutti i libri di testoBlitzer 8th EditionCh. 5 - Systems of Equations and InequalitiesProblema 25
Capitolo 6, Problema 25

In Exercises 19–30, solve each system by the addition method. 4x + 3y = 15 2x - 5y = 1
Exercise 25: Solve the system of equations 4x + 3y = 15 and 2x - 5y = 1 using the addition method.

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Multiply the second equation by 2 to align the coefficients of x: 2(2x - 5y) = 2(1)
This results in the equation: 4x - 10y = 2
Now, add the two equations together: (4x + 3y) + (4x - 10y) = 15 + 2
Combine like terms: 4x + 4x + 3y - 10y = 17
Simplify the equation to find the value of y: 8x - 7y = 17

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