B 0.25 Hg Em Cg - Gauthmath

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Math Resources/Math/Equation

Question

RÉVIEW EXERCISE 12 an Review Exercise 12a 12. So 1. Find the solution set of the equations eq x+y=7 and x-y=3. a)SHOW LESS75

Solution

user avatar imageJaydenUniversity of Allahabad · Math teacherAnswer\begin{equation}\begin{cases}x = 5\\y = 2\end{cases}\end{equation}ExplanationDetail stepsSubtract the two equations: x + y - (x - y) = 7 - 3Remove parentheses: x + y - x + y = 7 - 3Cancel one variable: y + y = 7 - 3Solve the equation: y = 2Substitute into one of the equations: x + 2 = 7Solve the equation: x = 5The solution of the system is: \begin{equation}\begin{cases}x = 5\\y = 2\end{cases}\end{equation}Click to rate:97.6(838 votes)Search questionBy textBy image/screenshotDrop your file here orClick Hereto upload

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