Có : 24+x/50+x = 3/5
24+x(1/50 +1) = 3/5
24+x(1/50+50/50)=3/5
24+x. 51/50 =3/5
51/50 . x =3/5-24
51/50 . x = 3/5-120/5
51/50 . x = -117/5
x = -117/50 : 51/50
x = -117/50 . 50/51
x = -117/51
x = -39/17
Vậy x = -39/17
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