Question

[Thầy Đức Anh]

(1,5 điểm) Tìm $x$.

a) $\dfrac{1}{2}-\dfrac{1}{2}: x=\dfrac{3}{4}$

b) $\dfrac{x-1}{15}=\dfrac{3}{5}$

c) $x+2,5=1,4$

Answer 1

[Nguyễn An Ninh]

a\()\)1/2-1/2:x=3/4

1/2:x=3/4+1/2

1/2:x=5/4

x=5/4*1/2

x=5/8

Answer 2

[Gia Hân]