Instrucciones: resuelve el siguiente sistema de ecuaciones de primer grado con dos incógnitas con el método de reducción. 6x - 5y = -9 4x + 3y = 13 porfavor ayuda les doy coronita Sí está bien el problema y el resultado
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Answer:
x = 1 , y = 3
Let 6x - 5y = -9 be equation (1) and 4x + 3y = 13 equation (2)
Let's find y first. So we have to make the coefficient of x equal i.e,
(1) × 4 => 24x - 20y = -36
(2) × 6 => 24x + 18y = 78
(2) - (1) =>
24x + 18y = 78 -
24x - 20y = -36
______________
0 + 38y = 114
y = 114÷38
y = 3
Giving value of y in equation (2)=>
24x + 18×3 = 78
24x + 54 = 78
24x = 78-54
24x = 24
x = 24 ÷ 24
x = 1
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