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1) 10x - 3y = 16
2) 4x - 7y = 18
Despejo x en 1
10x - 3y = 16
10x = 16 + 3y
x = (16 + 3y)/10
Sustituyo x en 2
4x - 7y = 18
4 (16 + 3y)/10 - 7y = 18
(6y + 32 - 35y) = 18 (5)
- 29y = 90 - 32
- 29y = 58
y = 58/-29
y = - 2
El valor de y sustituyo en x
x = (16 + 3y)/10
x = (16 + 3 (- 2)/10
x = (16 - 6)/10
x = 10/10
x = 1
Solución :
x = 1
y = - 2