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3m - m + 7 + 5m = 50
3m + 5m - m + 7 = 50
8m - m + 7 = 50
7m + 7 = 50
7m = 50 - 7
7m = 43
m = 43/7
Respuesta.
m = 43
3m-m+5m= 50 - 7
Haces la suma de las m y la resta de los enteros quedando:
7m=43
Despejas m, pasando a dividir 43 entre 7:
m=43/7
Por lo tanto:
m=6.142857143