Question

Rozwiąż układy równań metodą podstawiania ;

3m +n = 9

2m - 5n = - 11

Answer 1

 

3m + n = 9 => n = 9-3m

2m - 5n = -11

 

2m - 5(9-3m) = -11

2m - 45 + 15m = -11

17m = 34

m = 2

 

n = 9 - 3m

n = 9 - 3x2 = 9 - 6 = 3

 

odp.

m = 2

n = 3

 

 

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Litterarum radices amarae sunt, fructus iucundiores

 

Pozdrawiam :)