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2×+3y=4 → 3y = 4-2x → y = (4-2x)/3
y=4-5×
existen tres metodos para poder resolver: igualacion, sustitución y reduccion.
IGUALACIÓN
(4-2x)/3 = 4-5×
4-2X = 3(4-5X)
4-2x = 12 -15x
15x-2x = 12 - 4
13x = 8
x = 8/13
y=4-5× → y = 4-5(8/13) → y =4-40/13 → 13y = 52 - 40 →13y = 12 → y = 12/13
SUSTITUCION
2×+3y=4
y=4-5×
2X+3(4-5X)=4
2x+12-15x=4
12-4 = 13x
8 = 13x
8/13 = x
y=4-5× → y = 4-5(8/13) → y =4-40/13 → 13y = 52 - 40 →13y = 12 → y = 12/13
REDUCIÓN
2×+3y=4 ⇔ 5 ( 2x+3y = 4 ) ⇔ 10x+15y =20
y=4-5× -2 ( 5x+y = 4) -10x-2y = -8
--------------------------
----- 13y = 12 → y =12/13
2×+3y=4 → 2x + 3(12/13)=4 → 2x + 36/13=4 → 26x + 36 = 52 → 26x = 16 → 13x = 8 → x = 8/13
y=4-5×
existen tres metodos para poder resolver: igualacion, sustitución y reduccion.
IGUALACIÓN
(4-2x)/3 = 4-5×
4-2X = 3(4-5X)
4-2x = 12 -15x
15x-2x = 12 - 4
13x = 8
x = 8/13
y=4-5× → y = 4-5(8/13) → y =4-40/13 → 13y = 52 - 40 →13y = 12 → y = 12/13
SUSTITUCION
2×+3y=4
y=4-5×
2X+3(4-5X)=4
2x+12-15x=4
12-4 = 13x
8 = 13x
8/13 = x
y=4-5× → y = 4-5(8/13) → y =4-40/13 → 13y = 52 - 40 →13y = 12 → y = 12/13
REDUCIÓN
2×+3y=4 ⇔ 5 ( 2x+3y = 4 ) ⇔ 10x+15y =20
y=4-5× -2 ( 5x+y = 4) -10x-2y = -8
--------------------------
----- 13y = 12 → y =12/13
2×+3y=4 → 2x + 3(12/13)=4 → 2x + 36/13=4 → 26x + 36 = 52 → 26x = 16 → 13x = 8 → x = 8/13
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