Question

tìm x biết:

x + 30% . x = -1,3

Answer 1

x+30%.x=-1,3

=>x+\(\frac{3}{10}\).x=-1,3

=>x.(\(\frac{3}{10}+1\))=-1,3

=>x.1,3=-1,3

=>x=-1,3:1,3

=>x=-1

Answer 2

x+30%.x=-1,3

x+1/3.x=-1,3

x(1+1/3)=-13/10

x.4/3=-13/10

x= (-13/10) : (4/3)

x=-39/40

Ungr hộ mk nha

Answer 3

-39/40

Answer 4

Đéo bít

Answer 5

1/3 x +2/5.[x-1]=0