Question

Tìm y bài cuối mn ơi

Answer 1

`#040911`

`b)`

\(3\dfrac{1}{4}-a-1\dfrac{3}{4}=\dfrac{7}{8}\\ \left(3\dfrac{1}{4}-1\dfrac{3}{4}\right)-a=\dfrac{7}{8}\\ \dfrac{3}{2}-a=\dfrac{7}{8}\\ a=\dfrac{3}{2}-\dfrac{7}{8}\\ a=\dfrac{5}{8}\\ \text{Vậy, a = }\dfrac{7}{8}.\)