Question

n/v=m/M+m despejar m

Answer 1

N/v=m/M+mMultiplicas cruzado
n(M+m) = mv
nM + nm = mv
nM = mv - nm
nM = m(v - n )
nM / ( v - n ) = m
Entonces
m = nM / v - n
Espero hayas entendido . sl2 :*