Question

m/7=-n/8
m/7-3/4n=7
Método de reducción ​

Answer 1

m + n = 8 * 7

1ra e : m + n = 56

m - n = 7 * 7 *3

2da e : m - n = 147

Tenemos dos ecuaciones :

1 ( - 56 - n ) = 1 ( - 147 + n )

- 56 - n = - 147 + n

- n - n = - 147 + 56

- 2n = - 91

n = - 91 / - 2

n = 45.5

Remplazamos :

1ra e : m = 56 - 45.5

m = 10.5

10.5 + 45.5 = 56

2da e : m = 147 - 45.5

m = 101.5

101.5 + 45.5 = 147