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2x + 8y = x + 2y + 8
2x - x + 8y - 2y = 8
1) x + 6y = 8
3x - 10 = 5 (x - 3y)
3x - 10 = 5x - 15y
3x - 5x + 15y = 10
2) - 2x + 15y = 10
Despejo x en ecuación 1
x + 6y = 8
x = 8 - 6y
Sustituyo x en ecuación 2
- 2x + 15y = 10
- 2 (8 - 6y) + 15y = 10
- 16 + 12y + 15y = 10
12y + 15y = 10 + 16
27y = 26
y = 26/27
El valor de y lo sustituyo en el despeje de x
x = 8 - 6y
x = 8 - 6 (26/27)
x = 8 - 156/27
x = (8 * 27 - 156)/27
x = (216 - 156)/27
x = 60/27
x = 20/9
x = 20/9
y = 26/27
2(x+4y)=x+(2y+8)
3x-10=5(x-3y)
2x+8y=x+2y+8 2x-x+8y-2y=8 x+6y=8 ⇒⇒⇒⇒x=8-6y
→ → x=8-6(26/27)
3x-10=5x-15y 3x-5x+15y=10 -2x+15y=10 x=8-52/9
↓ x=20/9
-2(8-6y)+15y=10
-16+12y+15y=10
27y=10+16
27y=26
y=26/27
metodo de reduccion
x+6y=8 (2)
-2x+15y=10
2x+12y=16
-2x+15y=10
↔↔↔↔↔↔
0 +27y=26
y=26/27
x+6y=8
x+6(26/27)=8
x+52/9=8
x=8-52/9
x=20/9
ahi esta muchacho jaja espero que sirva ..jaja