Question

Metodo de eliminación
5x-3y=24
5x+y=15

Answer 1

.(*1){5x - 3y = 24
(*-1){5x + y = 15

5x - 3y = 24
-5x - y = -15
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0x - 4y = 9

-4y = 9
y = 9/-4

y = -9/4

para hallar el valor de x reemplazamos

*5x - 3y = 24
5x - 3 (-9/4) = 24
5x + 27/4 = 24
(20x + 27)/4 = 24
20x + 27 = 24 * 4
20x + 27 = 96
20x = 96 - 27
20x = 69
x = 69/20