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21-03-2017
Mathematics

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5x - 2y = 3
-5x + 4y = 9
Solve the system of equations.

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rarrininger rarrininger

21-03-2017

5x - 2y = 3
-5x + 4y = 9
_________
2y =12
2y/2= 12/2
y = 6

5x - 2(6) = 3
5x -12 = 3
5x -12+12 = 3+12
5x = 15
5x/5 = 15/5
x = 3

Check
-5(3) + 4(6) = 9
-15+24=9
9=9

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