Question

3m + 5n = 7
2m - 1 = -4​

Answer 1

2m - 1 = -4
2m = -3
m = -3/2 = -1,5

3m + 5n = 7
3 (-3/2) +5n = 7
5n = 7 + 9/2
5n = 23/2
n = 23/10 = 2,3

Answer 2

Respuesta:

m=7/3-5/3n , n∈R

Explicación paso a paso:

3m=7-5n

m=7/3-5/3n

2m=4+1

2m=5

m=5/2

5/2=7/3-5/3n

15=14-10n

10n=14-15

10=-1

n=-1/10