2011
Mathematics
67ca00ce0c643c71d77dee1f
Solve for x and y respectively in the simultaneous equations -2x - 5y = 3. x + 3y = 0
A.
-3, -9
B.
9, -3
C.
-9,3
D.
3, -9
Correct Answer: -9,3
Explanation
-2x -5y = 3 x + 3y = 0 x = -3y -2 (-3y) - 5y = -3 6y - 5y = 3 y = 3 but, x = -3y x = -3(3) x = -9 therefore, x = -9, y = 3
-2x -5y = 3 x + 3y = 0 x = -3y -2 (-3y) - 5y = -3 6y - 5y = 3 y = 3 but, x = -3y x = -3(3) x = -9 therefore, x = -9, y = 3THIS WEEK's
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